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An efficient and mild recycling of waste melamine formaldehyde foams by alkaline hydrolysis

Green Energy & Environment 2024年第5期9卷 919-926页

作者： Shaodi Wu Ning Zhang Chizhou Wang xianglin hou Jie Zhao Shiyu Jia Jiancheng Zhao Xiaojing Cui Haibo Jin Tiansheng Deng Shanxi Engineering Research Center of Biorefinery Institute of Coal ChemistryChinese Academy of Sciences27 South Taoyuan RoadTaiyuan030001China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing100049China Department of Chemistry and Chemical Engineering Taiyuan Institute of TechnologyTaiyuanShanxi030008China Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology/College of New Materials and Chemical Engineering Beijing Institute of Petrochemical TechnologyBeijing102617China

Melamine formaldehyde foam(MFF)generates many poisonous chemicals through the traditional recycling methods for organic resin ***,a high MFF degradation ratio of ca.97 wt.%was achieved under the mild conditions(160℃)in a NaOH–H2O system with ammelide and ammeline as the main degradation *** alkaline solvent had an obvious corrosion effect for MFF,as indicated by scanning electron microscopy(SEM).The reaction process and products distribution were studied by Fourier-transform infrared spectroscopy(FTIR),X-ray photoelectron spectroscopy(XPS),and ^(13)C nuclear magnetic resonance(NMR).Besides,the MFF degradation products that have the similar chemical structures and bonding performances to those of melamine can be directly used as the raw material for synthesis of melamine urea-formaldehyde resins(MUFs).Moreover,the degradation system demonstrated here showed the high degradation efﬁciency after reusing for 7 *** degradation process generated few harmful pollutants and no pre-or post-treatments were required,which proves its feasibility in the safe removal or recovery of waste MFF.

关键词： Melamine formaldehyde foam Degradation Alkaline hydrolysis Recycling

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Efficient oil-water separation by novel biodegradable all cellulose composite filter paper

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Green Energy & Environment 2023年第6期8卷 1673-1682页

作者： Chizhou Wang Shaodi Wu Ning Zhang Zhaoli Jiang xianglin hou Long Huang Tiansheng Deng Shanxi Engineering Research Center of Biorefinery Institute of Coal ChemistryChinese Academy of Sciences27 South Taoyuan RoadTaiyuan030001China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing100049China Key Laboratory of China Research Institute of Daily Chemistry Co. Ltd.Sinolight CorporationTaiyuan030001China CAS Key Laboratory of Carbon Materials Institute of Coal ChemistryChinese Academy of Sciences27 South Taoyuan RoadTaiyuan030001China Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology Beijing Institute of Petrochemical TechnologyBeijing102617China

Industrial production and domestic discharge produce a large amount of oily wastewater, which seriously affects the stability of the ecological environment. Membrane separation technology provides another path to treating oily wastewater. And appropriate surface modification of the membrane helps to achieve high efficiency of treating oily wastewater. With green, economy and stability been more *** focal research reports a completely biodegradable all cellulose composite filter paper(ACCFP) composed of Ⅰ-cellulose macrofibers and Ⅱ-cellulose matrix. It is a simple one-step impregnation method to adjust the surface microstructure of the pristine filter paper(PFP), and it does not involve with chemical reaction. The pre-wetted ACCFP consist of Ⅱ-cellulose hydrogel and Ⅰ-cellulose reinforcement in the process of oil-water separation. This layer of hydrogel is the fundamental to underwater superoleophobicity, which determines their eligibility for applications of efficient oil-water mixture or oil-in-water(oil/water) emulsion separation. The separation efficiency of oil-water mixture and oil/water emulsion exceed 95% and 99.9%, respectively. In addition, excellent mechanical properties of ACCFP in dry and wet conditions ensure its stability in service and prolong service life in applications. The focal study provides a new method for high-performance oil-water separation and it is more in line with sustainable chemistry.

关键词： All cellulose composite filter paper Pristine filter paper Oil in water separation Underwater superoleophobic property

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The Bang-Bang-Adjust Control Algorithm and Simulation during the Swing-up Process of Circular Rail Inverted Pendulum 25th

The Bang-Bang-Adjust Control Algorithm and Simulation during...

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第25届中国控制与决策会议

作者： xianglin hou Haifeng Yu Cong Chen Shenyang Jianzhu University school of Traffic and Mechanical Engineering

ISBN: (纸本)9781467355339

In this paper, the principles of homogeneous coordinate and analytical mechanics are used to build the equations of the dynamics differential equation of Circular Rail Inverted Pendulum. The Bang-Bang-Adjust Control Algorithm is put forward, and by applying control torque reasonably, the computer control during the swing-up process of Circular Rail Inverted Pendulum has been realized. The computer simulation of the swing-up process of Inverted Pendulum is also provided. The results indicated that the dynamics model and the control method are effective and feasible.

关键词： The Circular Rail Inverted Pendulum Swing-up Process The Bang-Bang-Adjust Control Algorithm

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Ternary deep eutectic solvents catalyzed D-glucosamine self-condensation to deoxyfructosazine: NMR study

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Green Energy & Environment 2021年第2期6卷 261-270页

作者： Pengfei Liu Christian Marcus Pedersen Jiaojiao Zhang Rui Liu Zhenzhou Zhang xianglin hou Yingxiong Wang Shanxi Engineering Research Center of Biorefinery Instiute of Coal ChemistryChinese Academy of Sciences27 South Taoyucn Road Taiyun030001China Center of Materials Science and Optoeletronics Engineering University of Chinese Academy of SciencesBejing100049China Department of Chemistny University of CopenhagenUniversitetsparken 5DK-2100 CopenhagenDenmark School of Chemical Engineering Zhengzhou University Zhengzhou450001China

Ternary deep eutectic solvents(TDESs) comprising choline chloride(Ch Cl), glycerol and L-arginine were synthesized as catalysts and solvents for the conversion of D-glucosamine(GlcNH_(2)) into deoxyfructosazine(DOF). The interactions between these three components in the prepared TDESs were studied by ^(1)H-,^(35)Cl-NMR spectra and ^(1)H diffusion-ordered spectroscopy(DOSY) measurements. The chemical shift changes of active hydrogen in the ^(1)H-NMR spectra of TDES system and widening of signals in the^(35)Cl-NMR spectra confirmed the hydrogen bonding interaction between the components, which was further supported by the decrease of diffusion coefficients(D) of the TDES components according to ^(1)H DOSY measurements. The influences of reaction temperature and L-arginine content in the TDESs on the yield of DOF were also studied. The experimental results have shown that when the molar ratio of Ch Cl, glycerol, and L-arginine was 1:2:0.1, DOF was the major product with a yield of 22.6% at 90℃ for 120 min. The chemical shift titration indicated that the carboxyl group of L-arginine in the TDES is the catalytical active site, so the mechanism of the catalytic reaction between Glc NH_(2) and the TDES was proposed. Moreover, a reaction intermediate, dihydrofructosazine, was identified in the self-condensation reaction of Glc NH_(2) by an in situ ^(1)H NMR technique.

关键词： Ternary deep eutectic solvents Hydrogen bonding NMR D-glucosamine Deoxyfructosazine

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NMR diffusion analysis of catalytic conversion mixtures from lignocellulose biomass using PSYCHE-iDOSY

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Green Energy & Environment 2023年第5期8卷 1409-1416页

作者： Qi Zhao Christian Marcus Pedersen Jiamin Wang Rui Liu Yuanli Zhang Xiuyin Yan Zhenzhou Zhang xianglin hou Yingxiong Wang Shanxi Engineering Research Center of Biorefinery Institute of Coal ChemistryChinese Academy of Sciences27 South Taoyuan RoadTaiyuan030001China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing100049China Department of Chemistry University of CopenhagenUniversitetsparken 5DK-2100CopenhagenDenmark School of Chemical Engineering Zhengzhou University Zhengzhou450001China Shanxi Inspection and Testing Center 106 Changzhi RoadTaiyuan030012China

The component analysis and structure characterization of complex mixtures of biomass conversion remain a challenging ***,developing effective and easy to use techniques is ***-ordered NMR spectroscopy(DOSY)is a non-selective and non-invasive method capable of achieving pseudo-separation and structure assignments of individual compounds from biomass mixtures by providing diffusion coefficients(D)of the ***,the conventional 1H DOSY NMR is limited by crowded resonances when analyzing complex mixtures containing similar chemical structure resulting in similar *** we describe the application of an advanced diffusion NMR method,Pure Shift Yielded by CHirp Excitation DOSY(PSYCHE-iDOSY),which can record high-resolution signal diffusion spectra efficiently separating compounds in model and genuine mixture samples from cellulose,hemicellulose and *** sets of isomers(D-glucose/D-fructose/D-mannose and 1,2-/1,5-pentadiol),homologous compounds(ethylene glycol and 1,2-propylene glycol),model compounds of lignin,and a genuine reaction system(furfuryl alcohol hydrogenolysis with ring opening)were successfully separated in the diffusion *** results show that the ultrahigh-resolution DOSY technique is capable of detecting and pseudo-separating the mixture components of C_(5)/C_(6) sugar conversion products and its derivative hydrogenation/hydrogenolysis from lignocellulose biomass.

关键词： Diffusion NMR Pure shift spectroscopy PSYCHE-iDOSY Mixture analysis Biomass

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Utilizing 3D DOSY NMR in the characterization of organic compounds in coal chemical wastewater

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Magnetic Resonance Letters 2022年第2期2卷 69-79,I0002页

作者： Hui Ma Christian M.Pedersen Qi Zhao Shiyu Jia Bin Yuan xianglin hou Yingxiong Wang Shanxi Engineering Research Center of Biorefinery Institute of Coal ChemistryChinese Academy of SciencesTaiyuan030001China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing100049China Department of Chemistry University of CopenhagenUniversitetsparken 5DK-2100CopenhagenDenmark State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Center for Magnetic ResonanceWuhan Institute of Physics and MathematicsInnovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan430071China

Coal chemical wastewater(CCW)with the features of high toxicity and poor biodegradability is a big issue in environmental remediation,posing a great threat to aquatic ecosystems and to human *** complex molecular mixtures are notoriously difficult to characterize without initial physical ***,we present the 3D diffusion ordered spectroscopy(DOSY)analysis for CCW using DOSY-COSY and DOSY-HSQC methods,the advantages of this strategy have been demonstrated in the analysis of mixtures of aliphatic oxygenates and aromatic compounds,before being implemented on a genuine CCW sample in this *** results showed that 3D DOSY is a robust and reliable tool for providing superior resolution and virtual separation of complex pollutants,and can be used as a general approach for structural elucidation.

关键词： Coal chemical wastewater 3D DOSY NMR Analysis Separation Structural characterization

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THE PRESENT STATUS AND PROSPECTS OF S&T DEVELOP-MENT IN PETROCHEMICAL INDUSTRY IN CHINA

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Bulletin of the Chinese Academy of Sciences 1997年第4期11卷 312-318页

作者： hou xianglin CAS and CAE member

Ⅰ. GENERAL SITUATION The petrochemical industry is a technology and capital-intensive industry. The United States took the lead in the development of the petrochemical industry and started launching petrochemical projects in the 1930s and 1940s. The petrochemical industry in other developed countries, such as Germany, the United kingdom, France, Italy and Japan, began their development in the 1960s and *** petrochemical industry in these countries has played

关键词： FCC Pro THE PRESENT STATUS AND PROSPECTS OF S&T DEVELOP-MENT IN PETROCHEMICAL INDUSTRY IN CHINA

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Collagen scaffolds modified with collagen-binding bFGF promotes the neural regeneration in a rat hemisected spinal cord injury model

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Science China(Life Sciences) 2014年第2期57卷 232-240页

作者： SHI Qin GAO Wei HAN XingLong ZHU XueSong SUN Jie XIE Fang hou xianglin YANG HuiLin DAI JianWu CHEN Liang Orthopedic Department the First Affiliated Hospital of Soochow University Orthopedic Department the Sixth People's Hospital of Hangzhou Division of Nanobiomedicine Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of Sciences Pathological Department Medical School of Soochow University State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of Sciences

Nerve conduit is one of strategies for spine cord injury(SCI)***,studies showed that biomaterials could guide the neurite growth and promote axon regeneration at the injury ***,the scaffold by itself was difficult to meet the need of SCI functional *** basic fibroblast growth factor(bFGF)administration significantly promotes functional recovery after organ ***,using a rat model of T9 hemisected SCI,we aimed at assessing the repair capacity of implantation of collagen scaffold(CS)modified by collagen binding bFGF(CBD-bFGF).The results showed that CS combined with CBD-bFGF treatment improved survival rates after the lateral hemisection *** CS/CBD-bFGF group showed more significant improvements in motor than the simply CS-implanted and untreated control group,when evaluated by the 21-point Basso-Beattie-Bresnahan(BBB)score and footprint *** hematoxylin and eosin(H&E)and immunohistochemical staining of neurofilament(NF)and glial fibrillary acidic protein(GFAP)demonstrated that fibers were guided to grow through the *** findings indicated that administration of CS modified with CBD-bFGF could promote spinal cord regeneration and functional recovery.

关键词： collagen scaffold basic fibroblast growth factor spinal cord injury nerve regeneration

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旋转倒立双摆摆起控制量的动态设计变量优化

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应用力学学报 2005年第3期22卷 404-408页

作者：侯祥林戴丽沈阳建筑大学沈阳110168 东北大学沈阳110004

倒立摆的摆起过程是复杂的非线性力学与控制的综合问题,当力学模型和参数确定时,寻求有效方法计算控制律函数是实现摆起的关键。本文以倒立双摆模型为研究对象,将动态设计变量优化方法引入对摆起开环控制律的分析,编制计算机程序进行数... 详细信息

倒立摆的摆起过程是复杂的非线性力学与控制的综合问题,当力学模型和参数确定时,寻求有效方法计算控制律函数是实现摆起的关键。本文以倒立双摆模型为研究对象,将动态设计变量优化方法引入对摆起开环控制律的分析,编制计算机程序进行数值仿真,确定了控制律函数与状态量随时间变化的状态,为复杂强非线性系统的控制提出了一种有效方法。

关键词：二级倒立摆非线性系统摆起控制动态设计变量优化算法

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Congratulations on the 15th World Petroleum Congress

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国际石油经济 1997年第5期 5-7页

作者： hou xianglin Chairman of the Chinese National Committee for the World Petroleum Congress Yang Hanfeng

The 15th World Petroleum Congress will be held in Beijing from October 12 to 16. I wish to convey my heartfelt congratulations on this grand occasion. The Chinese National Committee for the World Petroleum Congress (WPC) applied in 1990 to host the 15th WPC in Beijing, China. With support from the Chinese government, the Chinese National Committee worked hard to win the right to organize this Congress.

关键词： World will WPC Congratulations on the 15th World Petroleum Congress

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