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| 1 | Influence of the post-treatment of HZSM-5 zeolite on catalytic performance for alkylation of benzene with methanol显示文摘The porous material HZSM-5 zeolite with micro-mesopore hierarchical porosity was prepared by post-treatment(combined alkali treatment and acid leaching) of parent zeolite and its catalytic performance for benzene alkylation with methanol was investigated. The effect of post-treatment on the textural properties was characterized by various techniques(including ICP-AES, XRD, nitrogen sorption isotherms, SEM, NH3-TPD, Py-IR and TG). The results indicated that the post-treatment could modify the structural and acidic properties of HZSM-5 zeolite. In this procedure, not only additional mesopores were created by selective extraction of silicon but also the acidity was tuned. Consequently, the modified HZSM-5 zeolite showed larger external surface area with less acid sites as compared to the parent zeolite. It was found out that the modified zeolite exhibited a higher benzene conversion and xylene selectivity for alkylation of benzene with methanol as well as excellent life span of the catalyst than conventional ones. This can be explained by the facts that the presence of additional mesopores improved the diffusion property in the reactions. Furthermore, the modified zeolite showed an appropriate Br?nsted acidity for effective suppression of the side reaction of methanol to olefins, thus reduced the accumulation of coke on the HZSM-5 zeolite, which was favorable for the catalyst stability. In comparison with the parent HZSM-5 zeolite,the modified zeolite by alkali treatment and acid leaching showed better performance for the benzene alkylation with methanol. | Qingtao Wang Wenwen Han Hualei Hu Jinghui Lyu Xiaolong Xu Qunfeng Zhang Hongjing Wang Xiaonian Li | 2017 | Chinese Journal of Chemical Engineering2017，25，12： | 13 |
| 2 | Benzene alkylation with methanol over phosphate modified hierarchical porous ZSM-5 with tailored acidity显示文摘The acidity and acid distribution of hierarchical porous ZSM-5 were tailored via phosphate modification. The catalytic results showed that both benzene conversion and selectivity of toluene and xylene increased with the presence of appropriate amount of phosphorus. Meanwhile, side reactions such as methanol to olefins related with the formation of by-product ethylbenzene formation and isomerization of xylene to meta-xylene were suppressed efficiently. The acid strength and sites amount of Br?nsted acid of the catalyst were crucial for improving benzene conversion and yield of xylene, whereas passivation of external surface acid sites played an important role in breaking thermodynamic equilibrium distribution of xylene isomers. | Jinghui Lyu Hualei Hu Carolyn Tait Jiayao Rui Caiyi Lou Qingtao Wang Wenwen Han Qunfeng Zhang Zhiyan Pan Xiaonian Li | 2017 | Chinese Journal of Chemical Engineering2017，25，9： | 11 |
| 3 | A novel liquid system of catalytic hydrogenation显示文摘On the basis that endothermic aqueous-phase reforming of oxygenated hydrocarbons for H2 produc- tion and exothermic liquid phase hydrogenation of organic compounds are carried out under extremely close conditions of temperature and pressure over the same type of catalyst, a novel liquid system of catalytic hydrogenation has been proposed, in which hydrogen produced from aqueous-phase re- forming of oxygenated hydrocarbons is in situ used for liquid phase hydrogenation of organic com- pounds. The usage of active hydrogen generated from aqueous-phase reforming of oxygenated hy- drocarbons for liquid catalytic hydrogenation of organic compounds could lead to increasing the se- lectivity to H2 in the aqueous-phase reforming due to the prompt removal of hydrogen on the active centers of the catalyst. Meanwhile, this novel liquid system of catalytic hydrogenation might be a po- tential method to improve the selectivity to the desired product in liquid phase catalytic hydrogenation of organic compounds. On the other hand, for this novel liquid system of catalytic hydrogenation, some special facilities for H2 generation, storage and transportation in traditional liquid phase hydrogenation industry process are yet not needed. Thus, it would simplify the working process of liquid phase hy- drogenation and increase the energy usage and hydrogen productivity. | LI XiaoNian XIANG YiZhi | 2007 | Science China Chemistry2007，50，6： | 7 |
| 4 | Two-Stage Hydrogenation Modification of C_9 Petroleum Resin over NiWS/γ-Al_2O_3 and PdRu/γ-Al_2O_3 Catalysts in Series显示文摘Hydrogenation modification is one of the most important ways to produce high-quality petroleum resin.The colorless C9 petroleum resin(C9PR) was obtained by two-stage catalytic hydrogenation over NiWS/γ-Al2O3 catalyst and PdRu/γ-Al2O3 catalyst connected in series.Via the hydrogenation reaction,aromatic rings in C9PR were converted to alicyclic rings,and its color was reduced from Gardner color grade No.11 to Gardner color grade No.0.The optimum Ni/W atomic ratio was found to be close to 0.23,while the optimum Pd/Ru atomic ratio was close to 3.80.The TEM results showed that the morphology and size of sulfide or metal particles of the two kinds of catalysts remained almost unchanged after the reaction was carried our for 1 204 hours,attesting to their good catalytic stability. | Yu Lujun Jiang Dahao Xu Jiao Ma Lei Li Xiaonian | 2012 | China Petroleum Processing & Petrochemical Technology2012，14，3： | 7 |
| 5 | Oxygen and nitrogen-doped metal-free carbon catalysts for hydrochlorination of acetylene显示文摘Activated carbon was tested as metal-free catalyst for hydrochlorination of acetylene in order to circumvent the problem of environment pollution caused by mercury and high cost by noble metals. Oxygen-doped and nitrogen-doped activated carbons were prepared and characterized by XPS, TPD and N2 physisorption methods.The influences of the surface functional groups on the catalytic performance were discussed base on these results.Among all the samples tested, a nitrogen-doped sample, AC-n-U500, exhibited the best performance, the acetylene conversion being 92% and vinyl chloride selectivity above 99% at 240 °C and C2H2 hourly space velocity30 h-1. Moreover, the AC-n-U500 catalyst exhibited a stable performance during a 200 h test with a conversion of acetylene higher than 76% at 210 °C at a C2H2 hourly space velocity 50 h-1. In contrary, oxygen-doped catalyst had lower catalytic activities. A linear relationship between the amount of pyrrolic-N and quaternary-N species and the catalytic activity was observed, indicating that these nitrogen-doped species might be the active sites and the key in tuning the catalytic performance. It is also found that the introduction of nitrogen species into the sample could significantly increase the adsorption amount of acetylene. The deactivation of nitrogendoped activated carbon might be caused by the decrease of the accessibility to or the total amount of active sites. | Tongtong Zhang Jia Zhao Jiangtao Xu Jinhui Xu Xiaoxia Di Xiaonian Li | 2016 | Chinese Journal of Chemical Engineering2016，24，4： | 6 |
| 6 | Pd/C modified with Sn catalyst for liquid-phase selective hydrogenation of maleic anhydride to gamma-butyrolactone显示文摘Pd catalysts suffered from poor selectivity and stability for liquid-phase hydrogenation of maleic anhydride(MA) to gamma-butyrolactone(GBL).Thus,Pd/C catalysts modified with different Sn loadings were synthesized,and characterized by XRD,XPS,TEM and elemental mapping.The types of alloy phase and the amounts of the surface Pd-SnOx sites altered along with Sn/Pd mass ratios from 0-1.0synthesized in the process of preparation.The maximum reaction rate was 0.57 mol-GBL/(mol-Pd min)and selectivity was 95.94%when the Sn/Pd mass ratio was 0.6.It might be attributed to the formation of Pd_2Sn alloy and less amounts of Pd-SnOx sites. | Rongrong Li Jia Zhao Deman Han Xiaonian Li | 2017 | Chinese Chemical Letters2017，28，6： | 5 |
| 7 | Synthesized high-silica hierarchical porous ZSM-5 and optimization of its reaction conditions in benzene alkylation with methanol显示文摘In our present work, the high-silica hierarchical porous ZSM-5 with appropriate Br(o|¨)nsted acidity and hierarchical porous structure was synthesized by sol-gel method for continuously catalytic conversion of benzene alkylation with methanol to xylene. The effects of temperature, pressure, benzene/methanol molar ratio and weight hour space velocity(WHSV) on the catalytic performance of the catalyst were investigated as well. As a result, the high-silica hierarchical porous ZSM-5 showed great performance as the yield of xylene was up to 41.1% under the optimum reaction conditions(500 ℃,0.1 MPa,M_(benzene)/M_(methanol)= 1:1.5 and WHSV=4 h 1), while the selectivity to by-product, ethylbenzene, was well suppressed(below 0.1%). In addition, the catalyst structure and properties were characterized by the means of XRD, IR, TPD,SEM, TEM and N_2 physical adsorption technologies. | Jiayao Rui Jinghui Lyu Hualei Hu Qunfeng Zhang Qingtao Wang Xiaonian Li | 2019 | Chinese Chemical Letters2019，30，3： | 5 |
| 8 | Highly Active and Stable Ni_2P/SiO_2 Catalyst for Hydrogenation of C_9 Petroleum Resin显示文摘Catalytic hydrogenation is an appropriate method for the improvement of C9 petroleum resin(C9PR) quality. In this study, the Ni2P/SiO2(containing 10% of Ni) catalyst prepared by the temperature-programmed reduction(TPR) method was used for hydrogenation of C9 petroleum resins. The effect of reaction conditions on catalytic performance was studied, and the results showed that the optimum reaction temperature, pressure and liquid hourly space velocity(LHSV) was 250 ℃, 6.0 MPa, and 1.0 h-1, respectively. The bromine numbers of hydrogenated products were maintained at low values(250 mg Br/100g) within 300h, showing the high activity and stability of Ni2P/SiO2 catalyst. The fresh and spent catalysts were characterized by X-ray diffraction(XRD), BET surface area(BET) analysis, scanning electron microscopy(SEM), transmission electron microscopy(TEM), Fourier transform infrared(FTIR) pyridine adsorption, and X-ray photoelectron spectroscopy(XPS). Compared with the traditional sulfurated-Ni W catalysts, Ni2P possessed globe-like structure instead of layered structure like the active phase of Ni WS, thereof exposing more active sites, which were responsible for the high activity of Ni2P/SiO2 catalyst. The stability of Ni2P/SiO2 catalyst was probably attributed to its high sulfur tolerance, antisintering, anti-coking and carbon-resistance ability. These properties might be further ascribed to the special Ni-P-S surface phase, high thermal stability of Ni2P nanoparticles and weak surface acidity for the Ni2P/SiO2 catalyst. | Jiang Lin Feng Feng Jiang Dahao Guan Zhengyu Li Xiaonian | 2016 | China Petroleum Processing & Petrochemical Technology2016，18，1： | 4 |
| 9 | Titanium-Containing Mesoporous Materials: Synthesis and Application in Selective Catalytic Oxidation显示文摘包含钛我酣睡的分子筛具有在有笨重分子的选择催化氧化法的大意义。关于设计和 Ti-contaming 的合成的最近的研究和开发我酣睡的材料被考察了。为包含 Ti 的准备的各种各样的策略我酣睡的材料,例如直接合成并且合成以后,被描述。包含 Ti 的修正我由表面接枝的酣睡的材料并且种原子也被讨论。所有途径主要瞄准了改善稳定性, hydrophobicity,并且主要催化活。各种各样的合成系统的结构、机械学的特征被讨论。包含 Ti 我在液相的酣睡的材料有氧化剂简短被总结的 H2O2 的有机化合物的催化氧化,由催化氧化反应为精细化学药品的绿合成显示出他们的宽广实用程序。给词调音:我酣睡的材料;钛;分子筛;沸石;描述; | Jie Li Chunhui Zhou Huali Xie Zhonghua Ge Liangcai Yuan Xiaonian Li | 2006 | Journal of Natural Gas Chemistry2006，15，3： | 2 |
| 10 | A resource recycling technique of hydrogen production from the catalytic degradation of organics in wastewater显示文摘A resource recycling technique of hydrogen production from the catalytic degradation of organics in wastewater by aqueous phase reforming (APR) has been proposed. It is worthy of noting that this technique may be a potential way for the purification of refractory and highly toxic organics in water for hydrogen production. Hazardous organics (such as phenol, aniline, nitrobenzene, tetrahydrofuran (THF), toluene, N,N-dimethylformamide (DMF) and cyclohexanol) in water could be completely de-graded into H2 and CO2 with high selectivity over Raney Ni, and Sn-modified Raney Ni (Sn-Raney-Ni) or Pd/C catalyst under mild conditions. The experimental results operated in tubular and autoclave reactors, indicated that the degradation degree of organics and H2 selectivity could reach 100% under the optimal reaction conditions. The Sn-Raney-Ni (Sn/Ni=0.06) and Pd/C catalysts show better catalytic performances than the Raney Ni catalyst for the degradation of organics in water into H2 and CO2 by the aqueous phase reforming process. | LI XiaoNian KONG LingNiao XIANG YiZhi JU YaoMing WU XiaoQiong FENG Feng YUAN JunFeng MA Lei LU ChunShan ZHANG QunFeng | 2008 | Science China Chemistry2008，51，11： | 2 |
| 11 | Gas-phase dehydrochlorination of 1, 1, 2, 2-tetrachloroethane over the non-metal supported ionic liquid catalyst显示文摘Developing of non-metallic catalyst to replace metal catalyst is a meaningful and challenging direction.In this work,the non-metallic catalyst was synthetized successfully by loading ionic liquid onto the silica surface,which was applied for the gas-phase dehydrochlorination of 1,1,2,2-tetrachloroethane.The 12%TPPC/SiO2(wt%)showed the best results with the conversion of 1,1,2,2-tetrachloroethane reaching 100%.The selectivity of 1,1,2-trichloroethylene was 100%,and no deactivation was found during the evaluation period.The catalytic mechanism was investigated and possible reaction route was given,which was a reference for fabricating and design of solid base catalyst. | Pengze Zhang Yangzhen Jin Zhaobin Jiang Guanqun Xie Qunfeng Zhang Xiaonian Li | 2020 | Chinese Journal of Chemical Engineering2020，28，6： | 2 |
| 12 | Synthesis and acid catalysis of nanoporous silica/alumina-clay com- posites 显示文摘 | Zhou Chunhui Li Xiaonian Ge Zhonghua | 2004 | Catalysis Today2004，，9395： | 1 |
| 13 | Selective phenol hydrogenation to cyclohexanone over a dual supported Pd-lewis acid cat- alyst 显示文摘 | Li Xiaonian Xiang Yizhi | 2007 | China: Series B2007，37，： | 1 |
| 14 | The ligand coordination approach for improving the stability of low-mercury catalyst in the hydrochlorination of acetylene显示文摘Mercuric chloride supported on activated carbon(HgCl_2/AC) is used as an industrial catalyst for the hydrochlorination of acetylene. Loss of HgCl_2 by sublimating from the surface of activated carbon causes the irreversible deactivation of mercury catalyst and environmental pollution. In this work, a ligand coordination approach based on the Principle of Hard and Soft Acids and Bases(HSAB) was employed to design more stable lowmercury catalyst. The low-mercury catalysts(4% HgCl_2 loading) were prepared by using HgCl_2 and potassium halides(KX, X = Cl, I) as precursors. The HgCl_2-4KI/AC catalyst showed best catalytic stability than HgCl_2/AC and HgCl_2-4KCl/AC in the hydrochloriantion of acetylene. HgCl_2 could form more stable complex with KI,K_2HgI_4 as the main active component of the HgCl_2-4KI/AC catalyst. The characterizations of XRD and EDX analysis illustrated that the active component of HgCl_2-4KI/AC was highly dispersed on the surface of activated carbon.The sublimation rates of HgCl_2 from the catalysts verified that the active component with larger stability constant had better thermal stability. Using Hg(Ⅱ) complexes with high stability constant as the active component may be the research direction of developing highly stable low-mercury catalyst for the hydrochlorination of acetylene. | Xiaolong Xu Haihua He Jia Zhao Bailin Wang Shanchuan Gu Xiaonian Li | 2017 | Chinese Journal of Chemical Engineering2017，25，9： | 1 |
| 15 | Highly Selective Gas-phase Synthesis of 1,1-Dichloroethylene from 1,1,2-Trichloroethane over Supported Amine Catalysts显示文摘 | TANG Cen JIN Yanxia WANG Xiaoxia HU Gengshen XIE Guanqun LI Xiaonian LUO Mengfei | 2015 | Chemical Research in Chinese Universities2015，31，5： | 1 |
| 16 | Engineering porosity into trimetallic PtPdNi nanospheres for enhanced electrocatalytic oxygen reduction activity显示文摘Platinum(Pt)-based multi-metallic nanostructures show great promise as electrocatalysts for the oxygen reduction reaction(ORR) in fuel cell cathodes. Herein, we report a simple, one-step surfactant-directed synthetic strategy to directly synthesize tri-metallic PtPdNi mesoporous nanospheres(PtPdNi MNs) in a high yield. The synthesis could be accomplished in aqueous solution at mild reaction temperature(40C)without needing any organic solvent, yielding well-dispersed PtPdNi MNs with uniform shape and narrow size distribution. Benefitting from their unique mesoporous and highly open structure and tri-metallic composition, the as-synthesized PtPdNi MNs demonstrate superior catalytic activity and stability for ORR in acidic solution in comparison with PtPdNi nanodendrites(PtPdNi NDs), PtPd MNs and commercial Pt/C catalyst. The present approach may open a reliable path to the design of advanced electrocatalysts with desired performance. | Chunjie Li You Xu Yinghao Li Hongjie Yu Shuli Yin Hairong Xue Xiaonian Li Hongjing Wang Liang Wang | 2018 | Green Energy & Environment2018，3，4： | 1 |
| 17 | Effect of nitric acidpretreatment on the properties of activated carbon and sup-ported palladium catalysts 显示文摘 | Li Jiayun Ma Lei Li Xiaonian | 2005 | Industrial and EngineeringChemistry Research2005，44，15： | 1 |
| 18 | Removal ofcarbon dioxide from flue gas by ammonia carbonation in the gasphase显示文摘 | Li Xiaonian Edward Hagagaman Costas Tsouris | 2003 | Energy&Fuels2003，17，1： | 1 |
| 19 | Remoral of carbon dioxide from flue gas by ammonia carbonation in the gas phase显示文摘 | LI XIAONIAN EDWARD HAGAGAMAN COSTAS TSOURIS | 2003 | Energy & Fuels2003，17，1： | 1 |
| 20 | Graphdiyne anchoring to construct highly dense palladium trimer active sites for the selective hydrogenation of acetylene显示文摘Semi-hydrogenation of acetylene is of growing interest and popularity but subjects to a major challenge in selective hydrogenation to ethylene.Here,we report a strategy that uses graphdiyne(GDY)as a carrier to prepare single-cluster catalysts(SCCs),which on average clusters composed of three atoms(denoted as Pd3 trimer)and applied it to the acetylene semihydrogenation in the presence of large amounts of ethylene.Based on experimental results and systematic quantum chemical research and computational screening,we found that there are multiple active Pd structures on GDY and the Pd3 trimer anchored on GDY is a specific and durable cluster with great potential for accurate and efficient heterogeneous catalysis.The synergetic effects between neighboring atoms in Pd trimer guarantee easy desorption of ethylene and the absence of unselective hydride species thereby preventing excessive hydrogenation to generate unwanted byproducts,which is a crucial mechanism for the excellent selectivity of the catalyst.This new method for precise synthesis Pd clusters provides accurate ways for designing selective hydrogenation catalysts at the atomic scale. | Rongrong Li Yuxue Yue Xianlang Chen Renqin Chang Jiaxin Zhang Bo Zhao Jieyu Zhang Di Cai Yihan Zhu Deman Han Jia Zhao Xiaonian Li | 2023 | Nano Research2023，16，5： | 1 |
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