文献类型：期刊文献

英文题名：NiGa nano-alloy for the dry reforming of methane: Influences of Ga alloying with Ni on the catalytic activity and stability

作者：Liu, Xuqiang[1];Jiang, Fengyang[2];Liu, Kun[3,4];Zhao, Guofeng[5];Liu, Jinku[6];Xu, Haitao[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[2]East China Normal Univ, Sch Chem & Mol Engn, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China;[3]Shandong First Med Univ, Inst Opt Funct Mat Biomed Imaging, Sch Chem & Pharmaceut Engn, Tai An 271016, Peoples R China;[4]Shandong Acad Med Sci, Tai An 271016, Peoples R China;[5]Anhui Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Mol Solids, Minist Educ, Wuhu 241002, Peoples R China;[6]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：487

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20241315816230);WOS:【SCI-EXPANDED(收录号:WOS:001225197600001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (22179038) , the Special Project for Peak Carbon Dioxide Emissions-Carbon Neutrality (21DZ1206700) from the Shanghai Municipal Science and Technology Commission, the Incubation Program of Youth Innovation of Shandong Province (2021KJ100) , and the Academic Promotion Programe of Shandong First Medical University (2019QL008) .

语种：英文

外文关键词：Dry reforming of methane; Ni3Ga; Activity and stability; CH4 dissociation; CO2 activation

摘要：The massive emission of CO 2 and CH 4 has caused serious environmental and ecological problems, and dry reforming of methane reaction has received widespread attentions due to the fact that it can eliminate the two gas simultaneously. Herein, Ni 60 Ga 40 /Al 2 O 3 (molar ratio of Ni:Ga was 60:40) catalyst was synthesized by mechanochemical synthesis method, offering 75 % CH 4 conversion, 85 % CO 2 conversion, and H 2 /CO ratio of 0.93 at 750 degrees C during 120 h test. Ni in Ni 60 Ga 40 /Al 2 O 3 combines with Ga to form Ni 3 Ga intermetallic compound, which inhibits the sintering of Ni and rapid cracking of CH 4 . Moreover, the extra Ga species, existing in the form of Ga 2 O 3 -Al 2 O 3 with abundant oxygen vacancy, boosts CO 2 activation and prevents carbon development on catalyst surface. In contrast, for the pure Ni/Al 2 O 3 and Ga/Al 2 O 3 catalysts, the stability and catalytic activity couldn ' t be obtained synchronously. This work particularly investigated the CH 4 dissociation and CO 2 activation for the NiGa/Al 2 O 3 catalysts, establishing the foundation for rational design of low-cost performance catalysts for the dry reforming of methane reactions.