电力科技与环保2025，Vol.41Issue(3)：405-412,8.DOI:10.19944/j.eptep.1674-8069.2025.03.006
ZnZrOx催化二氧化碳加氢制甲醇的工艺性能研究
Process performance study of ZnZrOx solid solution catalysts in the hydrogenation of carbon dioxide to methanol
摘要
Abstract
[Objective]Methanol,a key industrial chemical,can be synthesized via CO2 hydrogenation using renewable hydrogen,serving as an effective pathway toward carbon neutrality.This study aims to optimize the process conditions of ZnZrOx solid solution catalysts for CO2 hydrogenation to methanol,focusing on temperature,pressure,space velocity,H2/CO2 ratio,and the role of a hydrophobic agent,providing guidance for industrial applications.[Methods]ZnZrOxcatalysts were prepared via ball milling.Catalytic performance was evaluated in a fixed-bed reactor under varied conditions(temperature,pressure,space velocity,H2/CO2molar ratio).In situ diffuse reflectance infrared Fourier transform spectroscopy was employed to analyze reaction intermediates.Additionally,hydrophobic polydivinylbenzene was physically mixed with the catalyst to enhance water removal and methanol synthesis.[Results]Optimal conditions were determined as 320 ℃,5 MPa,and 24 000 mL/(gcat·h),achieving a CO2 conversion of 5.1％,methanol selectivity of 72.2％,and maximum methanol yield.Increasing the H2/CO2 ratio from 3 to 9 improved CO2 conversion to 12.9％and methanol yield by 145.8％,with DRIFTS revealing accelerated formate intermediate formation.Introducing PDVB(mass ratio 1:1)facilitated water removal,boosting methanol yield to 414.0 mg/(gcat·h)at 320 ℃.[Conclusions]The ZnZrOx catalyst exhibited high efficiency under optimized conditions,while PDVB integration further enhanced methanol productivity.This study offers valuable insights for industrial CO2 utilization and catalyst design in sustainable chemical synthesis.关键词
二氧化碳加氢/甲醇/ZnZrOx催化剂/工艺条件/疏水剂Key words
CO2 hydrogenation/methanol/ZnZrOx catalyst/operating conditions/hydrophobicity分类
能源与动力引用本文复制引用
王霂晗,周宇,沈凯,张亚平..ZnZrOx催化二氧化碳加氢制甲醇的工艺性能研究[J].电力科技与环保,2025,41(3):405-412,8.基金项目
江苏省重点研发计划项目(BE2022602-3) （BE2022602-3）
