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| 1 | Modification of Cellulose by Hydrophobic Long-chain Molecules: Advances and Prospects显示文摘Cellulose,a natural polymer material with abundant natural sources,is non-toxic,renewable,and biodegradable,making it one of the most promising green materials.Its inherent hydrophilicity dramatically limits the development and application of cellulose products.Hydrophobic modification can significantly change cellulose properties and endow it with additional functions depending on the types of modifying molecules.Controlled modification of cellulose by long-chain hydrophobic molecules is challenging.Significant advances took advantage of new reaction systems and copolymerization.This paper reviews recent innovations in long-chain cellulose hydrophobic modification.A brief value-adding assessment provides a reference for green changes of cellulose to make it fit for future applications. | Yuyuan Wang Haishan Zhang Leyi Lin Rui Wu Xiaohui Wang Junli Ren Chuanfu Liu Xiaoying Wang | 2020 | Paper And Biomaterials2020，5，3： | 3 |
| 2 | Biochar-based Solid Acids as Catalysts for Carbohydrate Hydrolysis: A Critical Review显示文摘Recently, increasing interest has been focused on the hydrolysis of carbohydrates to monosaccharides, among which, glucose and xylose as typical platform sugars can be used to produce chemicals and biofuels. As heterogeneous catalysts, solid acids have gained extensive attention for biomass biorefinery and could replace the conventional process owing to their excellent properties, including acceptable acidity and easy separation. In particular, biochar-based solid acids derived from biomass are promising for biomass conversion owing to the low-cost of feedstocks and the simple preparation procedure. Herein, we attempt to provide a critical overview of biochar-based solid acids for hydrolysis of carbohydrates into glucose and xylose. The preparation methods and properties of biochar-based catalysts as well as the influence of their properties on catalytic performance were discussed in detail. We also highlight the major challenges facing the use of biochar-based solid acids for carbohydrate hydrolysis. | XiaoHui Wang QiXuan Lin YuHuan Yan BangGui Cheng Tao Song JunLi Ren | 2018 | Paper And Biomaterials2018，3，2： | 2 |
| 3 | Succinoylation of sugarcane bagasse under ultra- sound irradiation 显示文摘 | LIU Chuanfu SUN Runcang REN Junli | 2008 | Bioresource Technology2008，99，5： | 1 |
| 4 | Co-Production of High-Grade Dissolving Pulp,Furfural,and Lignin from Eucalyptus via Extremely Low Acid Pretreatment and Pulping Technologies and Catalysis显示文摘Hemicellulose and lignin are not reasonably utilized during the dissolved pulp preparation process.This work aimed to propose a process for the co-production of dissolving pulp,furfural,and lignin from eucalyptus.High-grade dissolving pulp was prepared from eucalyptus using a combination of extremely low acid(ELA)pretreatment,Kraft cooking,and elementary chlorine-free(ECF)bleaching.The obtained pre-hydrolysate was catalytic conversion into furfural in a biphasic system,and lignin during Kraft cooking and ECF was recovered.The process condition was discussed as well as the mass flow direction.The results showed that ELA pretreatment could effectively remove 80.1%hemicellulose.Compared with traditional hydrothermal pretreatment,the ELA pretreatment significantly increased the xylose yield from 5.05 to 14.18 g/L at 170℃ for 2 h,which had practical significance for furfural production.The 82.7%furfural yield and 82.9%furfural selectivity were obtained from xylose-rich pre-hydrolysate using NaCl as a phase modifier in a biphasic system with 4-methyl-2-pentanone(MIBK)as an organic phase by ion exchange resin catalysts at 190℃ for 2 h.Subsequently,the pretreated eucalyptus was subjected to Kraft cooking,and the optimal alkali amount was 14%.Then,the Kraft pulp was bleached using the O-D1-EP-D_(2) sequence,and dissolving pulp was obtained with an ISO brightness of 86.0%,viscosity of 463 mL/g,andα-cellulose content of 95.4%.The Kraft lignin which has a potential application was investigated by 2D-HSQC NMR and 31P NMR.The results showed that the S/G ratio of Kraft lignin was 1.93,and the content of phenolic hydroxyl groups was 2.53 mmol/g.Moreover,based on the above proposed process,30.5 g dissolving pulp,5.5 g furfural,and 21.2 g lignin per 100 g eucalyptus chips(oven dry)were produced.This research will provide new catalysis and pulping technical routes for dissolving pulp,furfural,and Kraft lignin products,which are in great demand in the chemical industry. | Chengxiang Li Yue Wu Chunhui Zhang Yao Liu Qixuan Lin Junli Ren | 2023 | Journal of Renewable Materials2023，11，6： | 1 |
| 5 | Disinfection effect of chlorine dioxide on bacteria in water显示文摘 | Huang Junli Wang Li Ren Nanqi | 1997 | Water Research1997，3，31： | 1 |
| 6 | An efficient method for the synthesis of hemicellulosic derivatives with bifunctional groups in butanol/water medium and their rheological properties显示文摘 | Xinwen Peng Junli Ren Runcang Sun | 2010 | Carbohydrate Polymers2010，，4： | 1 |
| 7 | Disinfection effect of chlorine dioxide on bacteria in water显示文摘 | HUANG JUNLI WANG LI REN NANQI | 1997 | Water research1997，31，3： | 1 |
| 8 | Disinfection effect of chlorine dioxide on bacteria in water 显示文摘 | HUANG JUNLI WANG L I REN NANQI | 1997 | Water Research1997，31，3： | 1 |
| 9 | Properties of polyvinyl alcohol/xylan composite films with citric acid 显示文摘 | Shuai yang Wang Junli Ren Weiying Li | 2013 | Carbohydrate Polymers2013，103，3： | 1 |
| 10 | Ethanol-type fermentation from carbohydrate in high rate acidogenic reactor显示文摘 | Ren Nanqi Wang Baozhen Huang Junli | 1997 | Biotechnol Bioeng1997，54，5： | 1 |
| 11 | High efficient deinking agents for ONP recycling显示文摘 | Ren Junli Liu Chuanfu Fu Yingjuan | 2003 | Chung-kuo Tsao Chih/China Pulp and Paper2003，22，3： | 1 |
| 12 | Disinfection effect of chlorine dioxide on bacteria in water显示文摘 | Huang Junli Wang Li Ren Nanqi | 1997 | Water Research1997，31，3： | 1 |
| 13 | Disinfection of Chlorine Dioxide on Bacteria in Water显示文摘 | Huang Junli Wang Li Ren Nanqi | 1997 | Water Research1997，31，3： | 1 |
| 14 | Disinfection effect of chlorine dioxide on viruses, algae and animal planktons in water显示文摘 | Huang Junli Wang li Ren Nanqi | 1997 | Water Research1997，31，3： | 1 |
| 15 | Role of UDP-Glucuronic Acid Decarboxylase in Xylan Biosynthesis in Arabidopsis显示文摘UDP 木糖(UDP-Xyl ) 是在象木聚糖那样的主要植物房间墙多糖的合成使用的 Xyl 施主(作为脊梁链 monosaccharide ) 并且 xyloglucan (作为分叉的 monosaccharide ) 。从 UDP-glucuronic 酸(UDP-GlcA ) 的 UDP-Xyl 的生合成被 UDP-glucuronic 酸 decarboxylase (UXS ) 不可逆转地催化。直到现在,很少在植物对 UXS 的生理的角色被知道了。这里,而 AtUXS3, AtUXS5,和 AtUXS6 位于 cytosol,我们报导 AtUXS1, AtUXS2,和 AtUXS4 位于 Golgi 仪器。尽管所有六挑选 AtUXS T-DNA,异种和 uxs1 usx2 uxs4 使变异的表演增加两倍没有明显的显型, uxs3 uxs5 uxs6 三元组异种有不规则的木部显型。Monosaccharide 分析证明 Xyl 层次在 uxs3 uxs5 uxs6 减少了,连接分析证实在 uxs3 xus5 uxs6 的木聚糖内容衰退了,显示从 cytosol AtUXS 的 UDP-Xyl 参予木聚糖合成。胶化浸透层析证明在三倍的异种的非有纤维质的多糖的分子的重量,主要木聚糖创作了,比的低在野类型,在木聚糖脊梁的延伸上建议效果。在 uxs3uxs5uxs6 三元组的 saccharification 处理茎之上,异种野类型比那些与更高的效率释放了 monosaccharides。一起拿,我们的结果显示 cytosol UXS 在木聚糖生合成比 Golgi 局部性的 UXS 起一个更重要的作用。 | Beiqing Kuang Xianhai Zhao Chun Zhou Wei Zeng Junli Ren Berit Ebert Cherie T. Beahan Xiaomei Deng Qingyin Zeng Gongke Zhou Monika S. Doblin Joshua L. Heazlewood Antony Bacic Xiaoyang Chen Ai-Min Wu | 2016 | Molecular Plant2016，9，8： | 1 |
| 16 | Disinfection effeet of chlorine dioxide on bacteria in water显示文摘 | Huang Junli Wang li Ren Nanqi | 1997 | Water Research1997，31，3： | 1 |
| 17 | Direct Retrieval of NO_(2)Vertical Columns from UV-Vis(390-495nm)Spectral Radiances Using a Neural Network显示文摘Satellite retrievals of columnar nitrogen dioxide(NO_(2))are essential for the characterization of nitrogen oxides(NO_(x))processes and impacts.The requirements of modeled a priori profiles present an outstanding bottleneck in operational satellite NO_(2)retrievals.In this work,we instead use neural network(NN)models trained from over 360,000 radiative transfer(RT)simulations to translate satellite radiances across 390-495nm to total NO_(2)vertical column(NO_(2)C).Despite the wide variability of the many input parameters in the RT simulations,only a small number of key variables were found essential to the accurate prediction of NO_(2)C,including observing angles,surface reflectivity and altitude,and several key principal component scores of the radiances.In addition to the NO_(2)C,the NN training and cross-validation experiments show that the wider retrieval window allows some information about the vertical distribution to be retrieved(e.g.,extending the rightmost wavelength from 465 to 495 nm decreases the root-mean-square-error by 0.75%)under high-NO_(2)C conditions.Applying to four months of TROPOMI data,the trained NN model shows strong ability to reproduce the NO_(2)C observed by the ground-based Pandonia Global Network.The coefficient of determination(R2,0.75)and normalized mean bias(NMB,-33%)are competitive with the level 2 operational TROPOMI product(R^(2)=0:77,NMB=−29%)over clear(geometric cloud fraction<0:2)and polluted(NO_(2)C≥7:5×10^(15)molecules/cm2)regions.The NN retrieval approach is~12 times faster than predictions using high spatial resolution(~3 km)a priori profiles from chemical transport modeling,which is especially attractive to the handling of large volume satellite data. | Chi Li Xiaoguang Xu Xiong Liu Jun Wang Kang Sun Jos van Geffen Qindan Zhu Jianzhong Ma Junli Jin Kai Qin Qin He Pinhua Xie Bo Ren Ronald C.Cohen | 2022 | Journal of Remote Sensing2022，，1： | 0 |
| 18 | Aging Resistance Evaluation of Aged Paper Reinforced with Different Nanocelluloses显示文摘Paper documents experience severe acidification and embrittlement.Nanocellulose is an excellent reinforcement material for paper documents owing to its compatibility and excellent mechanical strength.However,little research has been conducted on the aging resistance of nanocellulose-reinforced paper.In this study,six types of nanocelluloses were used to reinforce aged paper.The reinforcement and anti-aging performances were evaluated,and the anti-aging mechanism was further clarified.Nanocellulose with a high degree of polymerization can better enhance aged paper,and non-chemical nanocellulose also shows better anti-aging performance,such as nanocellulose prepared by mechanical or biological methods.However,nanocellulose prepared using chemical methods exhibits poor reinforcement and anti-aging performance.This is because it has a small particle size that is not beneficial for physical crosslinking with paper fibers.More importantly,the introduction of acidic or oxidizing groups on nanocellulose accelerates the acid hydrolysis and oxidation rate of paper fibers,especially nanocellulose prepared by 2,2,6,6-tetramethylpiperidine-1-oxyl oxidation,which should not be used to protect paper documents. | Xian Cao Bei He Jianlin Wang Chunhui Zhang Donglin Tang Qingyou Liang Chuanfu Liu Huiming Fan Junli Ren | 2023 | Paper And Biomaterials2023，8，3： | 0 |
| 19 | Triethylamine-catalyzed Isomerization of Glucose to Fructose under Low Temperature Conditions in Aqueous Phase显示文摘Isomerization of glucose derived from lignocellulosic biomass is an important step in biorefinery.Fructose isomerized from glucose,is used as a highly attractive sweetener in the food and beverages industries.However,the prevalence of side reactions at high glucose concentrations is a serious issue,leading to a significant reduction in the fructose yield,especially in the aqueous phase.In this study,an efficient method for the conversion of highly concentrated glucose into fructose under low temperature conditions using triethylamine as the catalyst was developed.It was demonstrated that high fructose yield could be maintained at high glucose concentration.At 60℃,fructose yield of 38.7%and fructose selectivity of 80.6%were achieved in 1 mol/L(approximately 17 wt%)glucose.When glucose concentration was increased to 2 mol/L(approximately 31 wt%),the fructose yield and selectivity were maintained at 34.7%and 77.4%,respectively.13C nuclear magnetic resonance(NMR)spectrometer was used to examine the glucose isomerization reaction.Compared to the NaOH catalytic system,triethylamine acted as a buffer to provide a stable alkaline environment for the catalytic system,further maintaining a high level of catalytic efficiency for the isomerization of glucose to fructose. | Xiao Zhang Banggui Cheng Qixuan Lin Xiaohui Wang Rui Li Junli Ren | 2020 | Paper And Biomaterials2020，5，4： | 0 |
| 20 | Dealuminated Hβ zeolite for selective conversion of fructose to furfural and formic acid显示文摘The fructose-to-furfural transformation is facing major challenges in the selectivity and high efficiency. Herein, we have developed a simple and effective approach for the selective conversion of fructose to furfural using Hβ zeolite modified by organic acids for dealuminization to regulate its textural and acidic properties. It was found that citric acid-dealuminized Hβ zeolite possessed high specific surface areas, wide channels and high Brønsted acid amount, which facilitated the selective conversion of fructose to furfural with a maximum yield of 76.2% at433 K for 1 h in the γ-butyrolactone(GBL)-H_(2)O system, as well as the concomitant formation of 83.0% formic acid. The^(13)C-isotope labelling experiments and the mechanism revealed that the selective cleavage of C1–C2 or C5–C6 bond on fructose was firstly occurred to form pentose or C5 intermediate by weak Brønsted acid, which was then dehydrated to furfural by strong Brønsted acid. Also this dealuminized Hβ catalyst showed the great recycling performance and was active for the conversion of glucose and mannose. | Rui Li Qixuan Lin Junli Ren Xiaobao Yang Yingxiong Wang Lingzhao Kong | 2024 | Green Energy & Environment2024，9，2： | 0 |
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