文献类型：期刊文献

英文题名：Ni-functionalized Ca@Si yolk-shell nanoreactors for enhanced integrated CO2 capture and dry reforming of methane via confined catalysis

作者：Sun, Shuzhuang[1,2,3];Wang, Yuanyuan[2];Xu, Yikai[2,4];Sun, Hongman[5];Zhao, Xiaotong[2];Zhang, Yingrui[2];Yang, Xiaoxiao[3];Bie, Xuan[3];Wu, Mengna[3];Zhang, Chen[2,6];Zhu, Yuan[2];Xu, Yongqing[3];Zhou, Hui[3,7];Wu, Chunfei[2]

机构：[1]Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Peoples R China;[2]Queens Univ Belfast, Sch Chem & Chem Engn, Belfast BT7 1NN, North Ireland;[3]Tsinghua Univ, Dept Energy & Power Engn, Key Lab Thermal Sci & Power Engn, Beijing Key Lab CO2 Utilizat & Reduct Technol,Mini, Beijing 100084, Peoples R China;[4]East China Univ Sci & Technol, Key Lab Adv Mat & Feringa Nobel Prize Scientist Jo, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[5]China Univ Petr, Coll Chem & Chem Engn, State Key Lab Heavy Oil Proc, Qingdao 266580, Peoples R China;[6]SINOPEC Econ & Dev Res Institue Co Ltd, Beijing 100029, Peoples R China;[7]Tsinghua Univ, Shanxi Res Inst Clean Energy, Taiyuan 030000, Shanxi, Peoples R China

年份：2024

卷号：348

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20240915647427);WOS:【SCI-EXPANDED(收录号:WOS:001198002500001)】；

基金：The authors gratefully acknowledge financial support from the National Natural Science Foundation of China (Grant No. 52276202) and the China Scholarship Council (reference number : 201906450023) . This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska- Curie grant agreement No 823745.

语种：英文

外文关键词：Dual functional material; Yolk-shell nanoreactor; Confined catalysis; Integrated CO2 capture and utilization; Dry reforming of methane; Ni-carbonates interface

摘要：The emerging integrated CO2 capture and utilization (ICCU) potentially contributes to net zero emissions with low cost and high efficiency. The catalytic performance in ICCU process is highly restricted by the equilibriums of carbonate decomposition and dry reforming of methane (DRM). Here, we engineer a unique yolk-shell dual functional nanoreactor construction to improve the catalytic performance via confined catalysis. By tailoring the carbonates decomposition kinetics and confining the CO2 diffusion path, -> 92% CO2 conversion is achieved over (Ni/Ca)@Si and shows no distinct activity loss in 10 cycles at 650 degrees C. The formed Ca2SiO4 shells restrain the sintering of CaO yolks by acting as physical barriers, and stabilize the Ni particle size. It is also confirmed on in situ DRIFTS that the integrated DRM might occur via carbonyls, formates and CHO intermediates, in which formates species are highly dependent on Ni-carbonates interfaces.