化工进展2024，Vol.43Issue(z1)：382-390,9.DOI:10.16085/j.issn.1000-6613.2024-0360
Ru-K-NaY催化草酸二甲酯脱羰基制备碳酸二甲酯
Ru-K-NaY catalyzed decarbonylation of dimethyl oxalate to dimethyl carbonate
张日东 1吕建华 1刘继东 1郭豹 1李文松1
作者信息
- 1. 河北工业大学化工学院,天津 300130
- 折叠
摘要
Abstract
A series of Ru-K-NaY catalysts with different Ru contents were prepared by using the method of excess impregnation which used NaY molecular sieves as carriers and pretreated by KNO3 solution.The catalysts were used for the first time in the reaction of decarbonylation of dimethyl oxalate(DMO)to prepare dimethyl carbonate(DMC).The effects of Ru loading and catalyst base on the reaction were investigated.The surface and structural properties as well as the alkaline properties of the Ru-K-NaY catalysts were characterized using XPS,BET and CO2-TPD,and it was determined that increasing the number of weak alkaline active sites as well as the number of Ru0 species of the catalysts could improve their catalytic activity and promote the generation of dimethyl carbonate.The reaction using Ru-K-NaY catalyst was optimized,yielding the DMO conversion and DMC selectivity were 83％and 69％,respectively.Finally,the stability test showed that the catalytic activity of the Ru-K-NaY catalyst was almost unchanged after 5 cycles.关键词
沸石/催化剂/催化剂载体/碳酸二甲酯/钌Key words
zeolite/catalyst/catalyst support/dimethyl carbonate/ruthenium分类
化学化工引用本文复制引用
张日东,吕建华,刘继东,郭豹,李文松..Ru-K-NaY催化草酸二甲酯脱羰基制备碳酸二甲酯[J].化工进展,2024,43(z1):382-390,9.
