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| 1 | N-doped carbon supported Pd catalysts for N-formylation of amines with CO2/H2显示文摘Using mesoporous N-doped carbons(NCs)derived from glucose and melamine as the supports,a series of Pd/NC catalysts were prepared,in which Pd nanoparticles with average size<2.0 nm were uniformly distributed on the supports.It was indicated that the resultant Pd/NC catalysts were effective for N-formylation of amines with CO_2and H_2in ethanol without any additives.Especially,the catalyst Pd/NC-800-6.9%containing quaternary N showed the best performance,affording a series of formylamides in good or even excellent yields.Further investigation reveals that the interaction between the Pd nanoparticles and quaternary nitrogen in the NC support was responsible for the good performance of the catalyst. | Xiaoying Luo Hongye Zhang Zhengang Ke Cailing Wu Shien Guo Yunyan Wu Bo Yu Zhimin Liu | 2018 | Science China Chemistry2018，61，6： | 4 |
| 2 | Reductive Cleavage of C-O Bond in Model Compounds of Lignin显示文摘 | Huanjun Xu Xinwei Liu Yanfei Zhao Cailing Wu Yu Chen Xiang Gao Zhimin Liu | 2017 | Chinese Journal of Chemistry2017，35，6： | 2 |
| 3 | Freeze-drying and hot-pressing strategy to embed two-dimensional Ti_(0.87)O_(2) monolayers in commercial polypropylene films with enhanced dielectric properties显示文摘The dielectric capacitor has been widely used in advanced electronic and electrical power systems due to its capability of ultrafast charging–discharging and ultrahigh power density.Nevertheless,its energy density is still limited by the low dielectric constant(≈2.2)of the commercial dielectric polypropylene(PP).The conventional enhancement strategy by embedding inorganic fillers in PP matrix is still difficult and challenging due to that PP hardly dissolves in any inorganic/organic solvent.In this work,we develop a new strategy including freeze-drying,surface functionalization,and hot-pressing to incorporate Ti_(0.87)O_(2) monolayers in PP film.A series of uniform composited Ti_(0.87)O_(2)@PP film has been successfully fabricated with Ti0.87O2 content range of 0–15 wt%.The maximum dielectric constant of the as-prepared Ti_(0.87)O_(2)@PP film is 3.27 when the Ti_(0.87)O_(2) content is 9 wt%,which is about 1.5 times higher than that of pure PP.Our study provides a feasible strategy to embed two-dimensional material into commercial PP thin-film with superior dielectric performance for practical application. | Wenchao Tian Fei Yan Cailing Cai Zeyi Wu Chenchen Zhang Ting Yin Sijia Lao Linfeng Hu | 2021 | Journal of Advanced Ceramics2021，10，2： | 1 |
| 4 | Ionic liquids-SBA-15 hybrid catalysts for highly efficient and solvent-free synthesis of diphenyl carbonate显示文摘Diphenyl carbonate(DPC)is one of the versatile carbonates,and is often used for the production of polycarbonates.In recent years,the catalytic synthesis of DPC has become an important topic but the development of a highly active metal-free catalyst is a great challenge.Herein,a series of ionic liquids-SBA-15 hybrid catalysts with different functional groups have been developed for the synthesis of DPC under solventfree condition,which are effective and clean instead of the metal-containing catalysts.It is found that in the presence of[SBA-15-IL-OH]Br catalyst,methyl phenyl carbonate(MPC)conversion of 80.5%along with 99.6%DPC selectivity is achieved,the TOF value is thrice higher than the best value reported by using transition metal-based catalysts.Moreover,the catalyst displays remarkable stability and recyclability.This work provides a new idea to design and prepare eco-friendly catalysts in a broad range of applications for the green synthesis of carbonates. | Songlin Wang Qiying Zhang Chengxing Cui Hongying Niu Cailing Wu Jianji Wang | 2023 | Green Energy & Environment2023，8，1： | 1 |
| 5 | Research on Image Storage Based on 3D Point Cloud显示文摘3D technology has been widely used in the fields of architecture,medical image,cultural relic protection,film production and 3D game.The polygon mesh is the most commonly used method for expressing the 3D model,it connects the points on the surface of the 3D model into polygons as a unit,which can express complex surfaces and provide strong adaptability.Especially in the use of triangular mesh the most widely used.But the triangular grid display,simplifi ed,progressive transmission algorithm is not suitable for large-scale data sets.The triangular mesh data fi le described in this paper with the boundary ball data fi le conversion system will represent and gradually compress these triangular meshes.This representation is not only compact,but also can be quickly calculated,its biggest feature is the high compression ratio,saving a lot of time and space,which makes it suitable for large-scale data sets.Its execution program can serve large-scale 3D data processing projects.This article has demonstrated that this system can be converted to include a large order of magnitude polygon model. | Xiangning Ma Jinghao Xu Cailing Wu Wanpeng Duan | 2017 | Big Data and Cloud Innovation2017，1，1： | 0 |
| 6 | Synergistic roles of platinum nanoparticles and sodium ions within beta zeolites in N-alkylation of amines with aromatic alcohols显示文摘N-alkylation of amines with alcohols is a promising green route for the synthesis of N-alkylamines, but the designation of highly active and stable heterogeneous catalysts remains one challenge. In this work, we initiated the application of zeolite-encapsulated noble metal nanoparticles(NPs) in the N-alkylation of amines with aromatic alcohols. Platinum(Pt) NPs were directly confined into the framework of BEA zeolite with tunable Si/Al molar ratios and Na^(+) contents. The champion catalyst afforded the extremely high turnover number(TON) of 6,176 and turnover frequency(TOF) of 3,390 h^(-1) plus stable recyclability and broad substrate compatibility. The Na ions modulated the electronic state of Pt NPs to reach a moderate Pt–H strength, which wellbalanced the two crucial steps of dehydrogenation and H-transfer and accounted for the high catalytic performance. The encapsulation of zeolites provided spatial satisfaction for the synergy effect above and enhanced the stabilization of Pt NPs. | Yue Wu Shibo Xi Cailing Chen Qizhi Hu Zhuo Xiong Jianyue Wang Yihu Dai Yu Han Shi Jiang Jun Wang Yu Zhou | 2023 | Science China Chemistry2023，66，9： | 0 |
| 7 | Selectively reductive amination of levulinic acid with aryl amines to N-substituted aryl pyrroles显示文摘Synthesizing nitrogen(N)-containing molecules from biomass derivatives is a new strategy for production of this kind of chemicals.Herein,for the first time we present the synthesis of N-substituted aryl pyrroles via reductive amination/cyclization of levulinic acid(LA)with primary aromatic amines and hydrosilanes(e.g.,PMHS)over Cs F,and a series of N-substituted aryl pyrroles could be obtained in good to excellent yields at 120○C.The mechanism investigation indicates that the reaction proceeds in two steps:the cyclization between amine and LA occurs first to form intermediate 5-methyl-N-alkyl-1,3-dihydro-2H-pyrrolones and their isomeride(B),and then the chemo-and region-selective reduction of intermediates take place to produce the final products.This approach for synthesis of N-substituted aryl pyrroles can be performed under mild and green conditions,which may have promising applications. | Cailing Wu Mengjie Lou Mingming Sun Huiyong Wang Zhiyong Li Jikuan Qiu Jianji Wang Zhimin Liu | 2023 | Green Energy & Environment2023，8，2： | 0 |
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