Ethylene glycol catalyst synthesized by dimethyl oxalate gas phase hydrogenation and preparation method thereof

The invention relates to an ethylene glycol catalyst synthesized by dimethyl oxalate gas phase hydrogenation and a preparation method thereof and mainly solves the problems of low ethylene glycol selectivity and low yield in the prior art. The ethylene glycol catalyst is prepared by the steps: modif...

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Hauptverfasser:	WANG WEI, ZHOU JIA, XIA LUNCHAO, MENG FANQIONG, SUN JIAN, XIA RUI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention relates to an ethylene glycol catalyst synthesized by dimethyl oxalate gas phase hydrogenation and a preparation method thereof and mainly solves the problems of low ethylene glycol selectivity and low yield in the prior art. The ethylene glycol catalyst is prepared by the steps: modifying compound containing silicon dioxide under high temperature by doping transition metal Zr/Ti/Ce;adjusting an internal channel structure of a silicon dioxide carrier; combining an ammonia distillation method to prepare a unique ethylene glycol Cu/modified SiO2 catalyst directionally synthesizedby dimethyl oxalate gas phase hydrogenation. The Cu/modified SiO2 catalyst disclosed by the invention can be applied to reaction for synthesizing ethylene glycol through dimethyl oxalate gas phase hydrogenation and shows extremely high hydrogenation activity and ethylene glycol selectivity. 本发明涉及种草酸二甲酯气相加氢合成乙二醇的催化剂及其制备方法，主要解决现有技术中存在乙二醇选择性低、收率低的问题。其技术方案为通过过渡金属Zr/Ti/Ce的掺杂，在高温下对含二氧化硅复合物进行改性，调整二氧化硅载体内部孔道结构，并结合蒸氨法制备出独特的草酸二甲酯气相加