草酸二乙酯

CO气相氧化偶联制草酸二乙酯催化剂研究

Study of catalyst of CO Coupling to Diethyl Oxalate in gaseous phase

钯催化剂上CO偶联制草酸二乙酯的XPS研究

XPS Study on Palladium Catalyst for CO Coupling to Diethyl Oxalate

其催化活性为8.3mol草酸二乙酯/molPd·h。

The activity for DEO is 8.3 mol / mol Pd · h.

CO气相偶联合成草酸二乙酯Pd-Fe/α-Al2O3催化剂研究

Study of Pd-Fe / Al_2O_3 Catalyst for CO Coupling to Diethyl Oxalate

CO偶联合成草酸二乙酯反应体系的过程分析和模拟

Process Analysis and Simulation for the Catalytic Coupling Reaction of Carbon Monoxide to Diethyl Oxalate

一氧化碳偶联制草酸二乙酯用Pd-Fe/α-Al2O3催化剂的表面结构

Surface Structure of Pd-Fe / α - Al_2O_3 Catalyst for CO Coupling to Diethyl Oxalate

考察了以α-Al2O3为载体的负载型钯系双金属催化剂用于CO气相催化偶联制备草酸二乙酯反应的活性。

The emphasis was addressing the effects of α Al 2O 3 support on the synthesis of the diethyl oxalate by vapor phase catalytic coupling reactions .

以工业应用为背景，研究了CO在钯系双金属催化剂上气相催化偶联合成草酸二乙酯的动力学特性。

The kinetic characteristics of catalytic coupling of carbon monoxide to diethyl ox-alate m gaseous phase on Palladium catalyst were studied on the basis of industrial application .

在固定床反应器中对钯系催化剂上CO气相催化偶联制草酸二乙酯和草酸二甲酯的空时收率、选择性和CO的转化率进行了实验研究。

The synthesis of dimethyl oxalate ( DMO ) and diethyl oxalate ( DEO ) by CO coupling reaction in gaseous phase over the supported palladium catalysts was investigated .

UNIFAC模型在草酸二乙酯合成体系中的应用

Application of UNIFAC Model in Diethyl Oxalate Synthesis System

进行了Pd/α-Al2O3催化剂上CO与C2H5OH气相催化偶合制草酸二乙酯的试验研究，并对自制的几种不同催化剂进行评选。

Diethyl oxalate was synthesized in a bench scale test by vapor catalytic coupling of carbon monoxide and ethyl alcohol on Pd / α - Al_2O_3 , and the various preparation methods of catalyst were evaluated .

以乙酸乙酯和草酸二乙酯为原料，经交叉Claisen酯缩合反应合成钠代草酰乙酸乙酯。

Sodium diethyl oxalacetate was prepared by Claisen condensation with acetic and oxalic acid esters .

以草酸二乙酯、丙酸乙酯、四氢吡咯等为原料经消除、取代等一系列反应合成新型生理致凉剂2（5H）-MPF。

Through series of eliminating and substituting reactions , using diethyl oxalate , ethyl propionate , pyrrolidine etc. as starting material , we achieve the new coolant 2 ( 5H ) - MPF .

制备草酸二乙酯偶联反应的工艺研究

Study on Reaction Conditions of Catalytic Coupling Reaction in Preparation of Diethyl Oxalate

草酸二乙酯催化加氢制乙二醇液相产物分析

Analysis of the Liquid Products from Catalytical Hydrogenation of Diethyl Oxalate to Ethylene Glycol

草酸二乙酯和碳酸二乙酯的总选择性在95%以上。

The overall selectivity of diethyl oxalate and diethyl carbonate is more than 95 % .

微波辐射稀土复合固体超强酸催化合成草酸二乙酯

Synthesis of Diethyl Oxalate by Catalysis of Rare Earth Composite Solid Superacid under Microwave Radiation

MgO/MCM-22催化苯与草酸二乙酯烷基化合成乙苯的研究

Selective synthesis of ethylbenzene by the alkylation of benzene with diethyl oxalate over mgo-modified MCM-22

草酸二乙酯与苯酚酯交换反应产物的气相色谱-质谱分析

Analysis of synthesized products from the transesterification of phenol with diethyl oxalate by gas chromatography-mass spectrometry

这些香料都是以草酸二乙酯与相应的醇为原料，通过酯交换反应来合成的。

This flavour is synthesized by the ester interchange using diethyl oxalate and relative alcohol as materials .

采用甲醇钠催化异丁醛与草酸二乙酯反应，一釜法合成了3-甲基-2-氧代丁酸钠。

By reacting isobutyraldehyde with diethyl oxalate using sodium methoxide as catalyst , 3-methyl-2-oxobutanoic acid , sodium salt was prepared by one pot .

一氧化碳常压气相催化偶联制草酸二乙酯的反应中，由于氢的引入致使偶联反应催化剂Pd-Fe/α-Al2O3失活。

Pd-Fe / α - Al_2O_3 catalyst was deactivated with introduction of H_2 to gaseous phase reaction of CO coupling to diethyl oxalate ( DEO ) .

该文在实验室连续精馏塔上研究工艺条件对草酸二乙酯精制过程的影响，为模型参数的修正提供实验数据。通过模拟计算，提出了适宜的草酸二乙酯精制分离工艺流程。

The effects of technological conditions on the purification of diethyl oxalate are studied on the laboratory continuous distillation column , which provides experimental data for correction of model parameter .

系统热力学分析表明，草酸二乙酯加氢制乙二醇的两步反应都是可逆放热反应，其中，低温对生成乙醇酸乙酯的反应有利，而高温对生成乙二醇的反应有利。

And the second step is hydrogenation of ethyl hydroxyacetate to ethylene glycol . Thermodynamic analysis of the reaction system indicates that the reactions of the two are reversible exothermic reactions .

结果及结论适宜的反应条件为1-甲基-1-氨基硫脲、草酸二乙酯、甲醇钠的量（摩尔）比例为10∶11∶20，其收率可达60%。

Results and conclusions The proportion of 1-methyl-1-thiosemicarbazide , oxalic diacetate and sodium methoxide was 1.0 ∶ 1.1 ∶ 2.0 , and the yield was 60 % under the suitable reaction condition .

结果表明在双金属钯催化剂上，草酸二甲酯的空时收率高于草酸二乙酯的空时收率。

The results indicated that the space time yield of DMO was higher than that of DEO over the supported palladium catalysts .