华东理工大学学报（自然科学版）2025，Vol.51Issue(1)：10-22,13.DOI:10.14135/j.cnki.1006-3080.20231227001
基于镍铝催化剂的碳酸盐加氢热解还原反应特性研究
Characteristics of Carbonate Hydrogenation Pyrolysis Reduction Reaction Based on Nicked Aluminum Catalyst
摘要
Abstract
In this study,using dolomite as a representative carbonate mineral,the catalytic hydrogenation and thermal decomposition reduction process of carbonates under a hydrogen gas atmosphere were explored by mechanically mixing Ni/γ-Al2O3 catalyst with dolomite.The effects of nNi/nAl,blending ratio,gas velocity,hydrogen concentration,reaction temperature,and stacking method of catalyst and magnesite on the reaction performance were investigated.The results showed that the Ni/γ-Al2O3 catalyst could significantly improve the conversion efficiency of carbonates,and φCO/φCO2 in the gas products increased from 1.105 without the catalyst to 2.622 with the catalyst.However,excessive nickel content,high hydrogen concentration,and low reaction temperature all promoted the formation of CH4 and reduced the selectivity of CO.The use of magnetism for the separation of catalyst and solid products was employed to enable multiple cycles of reactions,and the catalyst maintained its activity and selectivity after multiple cycles.关键词
CO2资源化/Ni基催化剂/白云石/碳酸盐加氢热解还原/催化剂循环Key words
CO2 utilization/Ni-based catalyst/dolomite/carbonate hydrogenation pyrolysis reduction/catalyst recycle分类
能源科技引用本文复制引用
窦本浩,杜锦标,胡兆一,周梵,代丽娜,高云飞,王辅臣..基于镍铝催化剂的碳酸盐加氢热解还原反应特性研究[J].华东理工大学学报（自然科学版）,2025,51(1):10-22,13.基金项目
国家重点研发项目(2022YFA1504701,2022YFB4101900) （2022YFA1504701,2022YFB4101900）
国家自然科学基金(22208104) （22208104）
上海市科委启明星项目扬帆专项(22YF1410300) （22YF1410300）
上海市教委晨光计划(21CGA35) （21CGA35）
