低碳化学与化工2025，Vol.50Issue(5)：101-109,9.DOI:10.12434/j.issn.2097-2547.20240360
碱助剂对MIL-68(Al)负载CuZnAl催化剂CO2加氢制甲醇催化性能的影响
Effects of base promoters on catalytic performances of MIL-68(Al)-loaded CuZnAl catalysts for CO2 hydrogenation to methanol
摘要
Abstract
CO2 hydrogenation to methanol catalyzed by cheap CuZnAl catalyst is one of the potential ways to save energy,reduce emission and alleviate energy shortage.However,the methanol selectivity and stability of the catalyst are still low.The CuZnAl catalyst(CZ-MIL)was prepared by impregnation method using MIL-68(Al),a metal-organic framework material with high specific surface area and stability,as the carrier.And then the acid-base property of CZ-MIL was regulated by alkali promoters NaOH,2,6-pyridine dicarboxylic acid(PDA)and sodium tetrborate(Na2B4O7),respectively.The effect of alkali promoters on catalytic performances and structures of the catalysts for CO2 hydrogenation to methanol was studied.The results show that the introduction of weak alkaline agent Na2B4O7 has a relatively good adjustment effect on acid-base property of the catalyst.Under the reaction conditions of V(H2)∶V(CO2)of 3∶1 in raw gas,total flow rate of raw gas of 100 mL/min,temperature of 250 ℃ and pressure of 3 MPa for 168 h,the methanol selectivity,CO2 conversion rate and methanol space-time yield of the catalyst are 54.94％,2.94％and 29.54 mg/(mL·h),respectively.关键词
CO2加氢/甲醇/CuZnAl催化剂/碱助剂/酸碱协调Key words
CO2 hydrogenation/methanol/CuZnAl catalyst/base promoters/acid-base coordination分类
化学化工引用本文复制引用
黄兆雄,任璐,郑利斌,王斌,李晶,郭建平,温月丽,黄伟..碱助剂对MIL-68(Al)负载CuZnAl催化剂CO2加氢制甲醇催化性能的影响[J].低碳化学与化工,2025,50(5):101-109,9.基金项目
北京建筑材料科学研究总院有限公司企业横向项目(18005059-ZS02-2022-0041) （18005059-ZS02-2022-0041）
国家自然科学(面上)基金(22479105). （面上）
