2026-10-11T11:30:28Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34041411 2026-10-01T08:04:51Z category_4 category_12 category_272 category_873 category_39 category_734 category_69 portal_63 item_type_6 month_year_10_2026

CeO₂–Ni@SiO₂ Catalyst with Shell-Mediated Diffusion in the Ni Membrane Reactor for Model Biomass-Derived Syngas Conversion Peijun Li (2130310) Yeqing Ling (25155297) Tao Li (86810) Rui Xiao (260235) Biochemistry Cell Biology Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Ecology Biological Sciences not elsewhere classified Inorganic Chemistry negligible carbon deposition 750 ° c ni active species principal gaseous components mesoporous diffusion channel controlled multicomponent feed biomass gasification gas approximately 200 h ni membrane reactor 4 </ sub 2 </ sub derived syngas provides ni membrane derived syngas mediated diffusion gaseous reactants controlled transport situ h simultaneous h model biomass dense h work demonstrates stable operation effective strategy conditions representative bed counterpart also mediated Model biomass-derived syngas provides a controlled multicomponent feed for evaluating CH₄ and CO₂ conversion under conditions representative of the principal gaseous components of biomass gasification gas. In this study, an integrated catalytic membrane design was developed, in which a CeO₂–Ni@SiO₂ core–shell catalyst was incorporated into a dense H₂-separating Ni membrane for the conversion of CH₄ and CO₂ in model biomass-derived syngas. The tailoring of the fine SiO₂ shell not only improved the reducibility and accessibility of Ni active species but also mediated the mesoporous diffusion channel for controlled transport of gaseous reactants. Coupled with in situ H₂ removal through the Ni membrane, the core–shell catalyst achieved CH₄ and CO₂ conversions of 91.6% and 52.8% at 750 °C, respectively, corresponding to increases of more than 50% and 25% compared with the fixed-bed counterpart. In addition, stable operation with negligible carbon deposition was maintained for approximately 200 h. This work demonstrates that the CeO₂–Ni@SiO₂ coupled Ni membrane reactor provides an effective strategy for the controlled conversion of model biomass-derived syngas and simultaneous H₂ recovery. 2026-10-01T00:00:00Z Text Journal contribution 10.1021/acs.energyfuels.6c04339.s001 https://figshare.com/articles/journal_contribution/CeO_sub_2_sub_Ni_SiO_sub_2_sub_Catalyst_with_Shell-Mediated_Diffusion_in_the_Ni_Membrane_Reactor_for_Model_Biomass-Derived_Syngas_Conversion/34041411 CC BY-NC 4.0