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Functional zirconium phosphate nanosheets enabled transfer hydrogenolysis of aromatic ether bonds over a low usage of Ru nanocatalysts

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Journal of Energy Chemistry 2023年第5期80卷 373-380,I0009页

作者： jinliang song Yayun Pang Chenglei Xiao Huizhen Liu Buxing Han School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006GuangdongChina Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of ColloidInterface and Chemical ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

Catalytic hydrogenolysis of aromatic ether bonds is a highly promising strategy for upgrading lignin into small-molecule chemicals,which relies on developing innovative heterogeneous catalysts with high ***,we designed porous zirconium phosphate nanosheet-supported Ru nanocatalysts(Ru/ZrPsheet)as the heterogeneous catalyst by a process combining ball milling and molten-salt(KNO_(3)).Very interestingly,the fabricated Ru/ZrPsheetshowed good catalytic performance on the transfer hydrogenolysis of various types of aromatic ether bonds contained in lignin,i.e.,4-O-5,a-O-4,β-O-4,and aryl-O-CH3,over a low Ru usage(<0.5 mol%)without using any acidic/basic *** investigations indicated that the properties of Ru and the support were *** excellent activity of Ru/ZZrPsheetoriginated from the strong acidity and basicity of ZrPsheetand the higher electron density of metallic Ru0as well as the nanosheet structure of ZrPsheet.

关键词： Valorization of lignin Aromatic ether bonds Transfer hydrogenolysis synergistic cooperation Zirconium phosphate nanosheets

EXPERIMENTAL STUDIES ON DYNAMIC PROPAGATION OF CRACKS UNDER BIAXIAL COMPRESSION

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Acta Mechanica Solida Sinica 1994年第3期7卷 211-220页

作者： Yu, Hengwen song, jinliang Feng, Deyi Jian, Chun Univ of Science & Technology of China Hefei China

This paper deals with the initiation and non-coplaner propagation of cracks under biaxial compression. The running process of the propagating cracks is successfully recorded with the method of dynamic photoelasticity. A series of important fracture parameters such as cracks propagating velocity, critical opening loading and initial angle of cracks growth under biaxial compression is calculated. Results show that the stress field in front of the non-closed crack tip under biaxial compression is a mixed-mode singular field, the dynamic propagation of the new tensile cracks is just stable and shows distinct stages, but the unstable crack appears under high loads and results in the rupture of the matrix.

关键词： Failure (mechanical) Fracture Fracture mechanics Loads (forces) Photoelasticity Stability Stresses Velocity

On the measurements of individual particle properties via compression and crushing

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Journal of Rock Mechanics and Geotechnical Engineering 2021年第2期13卷 377-389页

作者： Chunlong Liu Fengyin Liu jinliang song Fuli Ma Dongfang Wang Guoping Zhang Institute of Geotechnical Engineering Xi’an University of TechnologyXi’an710048China Department of Civil and Environmental Engineering University of Massachusetts AmherstAmherstMA01003USA State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China College of Architecture and Civil Engineering Taiyuan University of TechnologyTaiyuan030024China

An experimental study is presented to measure the elastic,yielding,and crushing properties of individual particles under compression using substrates made of aluminum alloy,stainless steel,and *** selected,highly spherical individual Ottawa sand particles of 0.75e1.1 mm in nominal diameter were compressed between two smooth substrates,and the loadedeformation curves were analyzed by Hertz elastic contact theory to derive their reduced modulus and Young’s modulus as well as yielding and crushing strengths,which vary significantly with the type of substrate *** analysis of the yielding and plastic deformation at the particle-substrate contact shows that the yield strength or hardness of the substrate materials dominates the local contact behavior and hence affects the measured apparent yielding and crushing *** two softer substrates(aluminum alloy and stainless steel)actually lead to underestimated apparent shear yield strengths of quartz particles by 60.4%and 54.2%,respectively,which are actually the yielding of substrates,while the true particle yielding occurs in the sapphire-particle ***,the two softer substrates cause much overestimated crushing strengths of the quartz particles by 50.4%and 36.4%,*** of inappropriate substrate materials and inappropriate interpretation of the particle-substrate contact can lead to significant errors in the measured yielding and crushing *** is recommended that single particle compression testing uses substrates with yield strength greater than that of the tested particles and result interpretation also considers the elastic and yielding behaviors of the substrates.

关键词： Elasticity Hertz contact Particle crushing Strength Yielding Weibull distribution

Efficient dehydration of carbohydrates to 5-hydroxymethylfurfural in ionic liquids catalyzed by tin(Ⅳ) phosphonate and zirconium phosphonate

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Science China Chemistry 2013年第11期56卷 1578-1585页

作者： NING Hui song jinliang HOU MinQiang YANG DeZhong FAN HongLei HAN BuXing Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences

In this work,we synthesized tin(IV)phosphonate(SnBPMA)and zirconium phosphonate(ZrBPMA)by the reaction of SnCl4·5H2O or ZrOCl2·8H2O with N,N-bis(phosphonomethyl)aminoacetic acid,which was synthesized from a biomaterial glycine through a Mannich-type *** SnBPMA and ZrBPMA were very efficient heterogeneous catalysts for the dehydration of fructose to produce 5-hydroxymethylfurfural(HMF),and the SnBPMA had higher activity than the *** effects of solvents,temperature,reaction time,and reactant/solvent weight ratio on the reaction catalyzed by SnBPMA were *** was demonstrated that the yield of HMF could reach 86.5%with 1-ethyl-3-methylimidazolium bromide([Emim]Br)as solvent,and the SnBPMA and SnBPMA/[Emim]Br catalytic system could be reused five times without considerable reduction in catalytic *** study indicated that the SnBPMA and ZrBPMA in[Emim]Br were also effective for the dehydration of sucrose and inulin to produce HMF with satisfactory yields.

关键词： fructose inulin sucrose dehydration 5-hydroxymethylfurfural heterogeneous catalysts

Acceleration of disproportionation reactions of aryl alcohols in water medium by CO_2

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Science China Chemistry 2013年第10期56卷 1436-1439页

作者： ZHANG BinBin song jinliang MA Jun WANG WeiTao ZHANG Peng JIANG Tao HAN BuXing Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Colloid and Interface and ThermodynamicsInstitute of Chemistry Chinese Academy of Sciences

Compressed CO~ could promote the disproportionation reactions of aryl alcohols in water medium significantly. The control experiments indicated that the effect of CO2 on the properties of the reactant/water emulsions ... 详细信息

关键词： C02 water acceleration disproportionation aryl alcohols

Chirality Inversion of Assemblies of Bio-based Surfactant Triggered by Metal Ions

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Chemical Research in Chinese Universities 2018年第2期34卷 155-157页

作者： ZHANG Lujun ZHANG Pei ZHANG Xiudong song jinliang YANG Guanying JIANG Long HAN Buxing Beijing National LaboratoryforMolecular Sciences Key Laboratory of Colloid and Interface and Thermodynamics Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China University of Chinese Academy of Sciences Beijing 100049 P. R. China

The utilization of biomass has attracted much attention during the last decade. Sorbitol is a kind of abundant biomass with multiple chiral centers in its skeleton, indicating an im- portant potential for helical architectures. Helical nanostruc- tures with switchable chirality are attracting much attention due to their crucial roles in many fields.

关键词： Chirality inversion Bio-based surfactant Metal ion Assembly Helicity

Synthesis of cyclic carbonates and dimethyl carbonate using CO_(2) as a building block catalyzed by MOF-5/KI and MOF-5/KI/K_(2)CO_(3)

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Frontiers of Chemistry in China 2011年第1期6卷 21-30页

作者： jinliang song Binbin ZHANG Tao JIANG Guanying YANG Buxing HAN Beijing National Laboratory for Molecular Sciences Institute of ChemistryChinese Academy of SciencesBeijing 100190China

The synthesis of cyclic carbonates or dimethyl carbonate(DMC)using CO_(2) as a building block is a very interesting *** this work,we found that the metalorganic framework-5(MOF-5)/KI was an active and a selective catalytic system for the synthesis of cyclic carbonates from CO_(2) and epoxides,and MOF-5/KI/K_(2)CO_(3) was efficient for the preparation of DMC from CO_(2),propylene,and methanol by a sequential *** impacts of temperature,pressure,and reaction time length on the reactions were investigated,and the mechanism of the reactions is proposed on the basis of the experimental results.

关键词： carbon dioxide cyclic carbonates dimethyl carbonate(DMC) metal-organic framework-5(MOF-5) sequential route propylene oxide