酸碱催化

Lewis酸碱催化氨基甲酸甲酯和甲醇合成碳酸二甲酯

Synthesis of Dimethyl Carbonate from Methyl Carbamate and Methanol by Lewis Acid-Base Catalysis

生物质通过水解可得到单糖，而单糖在酸碱催化下可以得到一系列重要的平台化合物，如5-羟甲基糠醛（5-HMF）、乙酰丙酸（LA）、乳酸等。

Monosaccharides , which can be obtained from hydrolysis of biomass , can produce some important platform chemicals by acidic or basic catalysis , such as 5-hydroxymethylfurfural ( 5-HMF ), levulinic acid ( LA ) and lactic acid .

以RODD为研究对象，运用分子蒸馏、酸碱催化酯化和脂肪酶催化技术分离维生素E、甾醇和FAME。（1）系统研究并优化了RODD经甲酯化途径分离甾醇、FAME和VE工艺。

The separation of vitamin E , sterols and FAME with acid and lipase esterification by molecular distillation from RODD . ( 1 ) Optimization of sterols , FAME and vitamin E separation from RODD was studied systematically on basis of acid catalyzed methyl esterification .

结果表明：配合物1对PNPP及PNPA的催化作用具有酸碱催化的特征，催化活性物种为与金属离子结合的氢氧根离子CoL-OH-；

The results indicate that 1 catalyzed hydrolysis of PNPP and PNPA is acid base catalytic process and the active species is metal bound hydroxide ion , i.e. , CoL OH - .

化学工业中的新酸碱催化过程

New Acid / base - catalyzed Processes in Chemical Industry

固体酸碱催化马来松香酯化反应

Study on catalytic esterification of Maleated Rosin with solid acids and solid alkali

同时对酸碱催化未来的研究方向进行了评述。

The future trend of research in acid / base catalysis is discussed .

烷基苯酚聚氧乙烯醚酸碱催化缩聚机理的量子化学研究

Quantum chemistry study on condensation mechanism of alkylphenol polyoxyethylene catalyzed by acid and base catalysts

利用近临界水优良的溶解性能和酸碱催化功能，可以使纤维素在近临界水中发生水解反应，实现再资源化。

Cellulose can be hydrolyzed in subcritical water and converted to useful chemicals by using the excellent solubility and acid catalytic function .

铁氧化合物的合成及其在处理苯系酚类废水中的催化应用钴镍铁水滑石的合成、表征及衍生复合氧化物酸碱催化活性研究

Synthesis of Iron Oxides and Its Catalytic Application in the Treatment of Phenolic Wastewater ; Synthesis , characterization and catalysis of Co-Ni-Fe hydrotalcite like compounds

固体酸碱催化餐饮废油脂制备生物柴油餐厨垃圾固相油脂液化及分离回收的影响因素

Preparation of biodiesel from waste cooking oil by solide acid base catalysis Factors influencing the liquefaction , separation , and recovery of solid grease from restaurant garbage

近临界水与有机物的优异互溶和对有机反应的酸碱催化能力，为绿色化学合成工艺的开发提供了良好的契机。

Near or supercritical water is an excellent solvent and acid / base catalyst for organic reactions , which provides opportunity for environmental benign innovation in conventional chemical engineering process .

酸碱分步催化对溶胶-凝胶ZrO2薄膜光学性能的影响

Optical characterization of sol-gel ZrO_2 coatings with acid alkali two-step method

采用固体酸碱催化剂催化的酯交换反应过程避免了传统均相酸碱催化剂催化酯交换产品的分离困难和废弃催化剂的环境污染问题。

In comparison with traditional homogeneous acid / base catalyst , the heterogeneous acid / base catalyst could obtain a purer product and avoided some problems such as purification of product , separation and pollution of used catalyst .

利用溶胶-凝胶酸碱二步催化法和常压干燥法制备了SiO2干凝胶。

Two-step acid-base catalyzed silica xerogels were prepared through sol-gel and ambient pressure drying .

因此，在γ-Al2O3表面甲醇脱水反应是一种酸碱协同的催化反应。

Therefore , on the surface of γ - Al_2O_3 CH_3OH , dehydration reaction was catalysed by the acid-base synergism .

非均相酸碱催化剂协同催化Aldol反应

Study on the Aldol Reaction Catalyzed Cooperatively by Heterogeneous Acid-base Catalysts

以正硅酸乙酯（TEOS）为硅源，采用酸碱二步催化溶胶-凝胶法，结合超临界干燥技术制备了超低密度SiO2气凝胶。

The two-step ( acid-base ) sol-gel process is employed to prepare SiO_2 aerogels with TEOS as the precursor .

氧化镁催化剂的酸碱性和催化活性

The acid - base property and catalytic activity of magnesium oxide catalyst

研究非均相固体酸碱催化剂、催化的酯化反应过程及酯化产品的理化特性对生物柴油的生产技术进步和应用推广都有重要的意义。

The handles such as heterogeneous catalyst , related transesterification reaction and the properties of the reaction product were important for the improvement of bio-diesel production and application .

但是，传统均相酸碱催化剂在催化合成生物柴油的酯交换反应中存在产品、催化剂分离困难，分离时产生大量废水而污染环境等问题。

However , the traditional homogeneous acid-base catalyst in the catalytic synthesis of biodiesel transesterification is difficult to separate from the products , and a large number of waste water was generated in the separation , causing environmental pollution problems .

讨论了酸碱催化剂的催化机理，以及以碱土金属为主体的双组分、多组分催化体系在控制和窄化分子量分布方面的研究成果，同时简要评述了其发展趋势。

The reaction mechanism of acidic and alkaline catalysts and the research results in the area of controlling and narrowing the molecular weight distribution by alkaline-earths based binary and multicomponent catalysts are reviewed and discussed with a brief forecast of its developing trend .

本文研究脂肪酶催化反应性质：包括催化水解作用温度、pH适宜范围、酶的酸碱稳定性，酶催化水解作用酯键位置特异及逆向的催化作用等。

The catalytic characters of lipase were studied . They included the optimum pH and temperature , the stability of pH and heat , the specificity of ester bond position for hydrolyzation .

最后，考察了载体表面的酸碱性对催化剂催化性能的影响。

Finally , the catalyst performance modified by carrier was discussed .

但总体来看，催化剂的酸碱性能对于乳酸催化脱水制丙烯酸反应的影响不是决定性的因素。

However , the acid-base properties of catalysts do not play a decisive effect for catalytic dehydration of lactic acid reaction .