Synergistic oxidation-reforming of biomass for high quality syngas production based on a bifunctional catalyst

查看全文 作　　者：Tao [1,2,3]He;Dan [1,4]Zhang;Wenqing [1,4]Chen;Zeng [1,4]Liu;Ruidong [1,2,3]Zhao;Jianqing [1,2,3]Li;Jingli [1,2,3]Wu;Zhiqi [1,2,3]Wang;Jinhu [1,2,3]Wu

机构地区：[1]CAS Key Laboratory of Biofuels,Qingdao Institute of Bioenergy and Bioprocess Technology,Chinese Academy of Sciences,Qingdao 266101,China;[2]Shandong Energy Institute,Qingdao 266101,China;[3]Qingdao New Energy Shandong Laboratory,Qingdao 266101,China;[4]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Green Carbon》索引2024年第2卷第1期,共6页

基　　金：the financial support of the National Natural Science Foundation of China(22178366);Natural Science Foundation of Shandong Province(ZR2020MB138);Shandong Energy Institute(SEI S202103). 摘　　要：Conventional O_(2)gasification for low-rank biomass/sludge conversion is prone to high CO_(2)concentrations in the syngas because of its high O content and low calorific value.This study establishes a synergistic oxidationreforming reaction route for the conversion of low-rank carbon-containing resources into high-quality syngas.The efficient oxidation-reforming reaction is based on the bifunctional catalyst NiO-Fe2O3/Al2O3,which includes Fe2O3 oxidation sites and NiO reforming sites.Hydrogen temperature-programmed reduction,together with X-ray diffraction and X-ray photoelectron spectroscopy experiments,demonstrated that the two functional active sites have strong interactions with the support,leading to efficient cooperation between the oxidation reaction and reforming reaction with regards to both the reaction sequence and C/H/O element balance.Syngas produced from biomass/sludge based on oxidation-reforming reactions has an extremely low CO_(2)concentration of approximately 3%,and the valid gas(CO,H_(2))concentration exceeds 95%.The valid gas yield of walnut shell reached 1452.9 mL/g,the total gas yield was 1507.2 mL/g,and the H_(2)/CO ratio was 1.02,which are all very close to the theoretical maximum values of 1553.1 mL/g and 1.01,respectively,demonstrating that the inherent CO_(2)/H_(2)O along with CH4/tar species were efficiently converted to H_(2)and CO through oxidation-reforming reactions.During a 60-cycle test,NiO-Fe2O3/Al2O3 exhibited good redox stability. 关键词：BIOMASS SYNGAS Oxidation-reforming BIFUNCTIONAL Catalyst

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Synergistic oxidation-reforming of biomass for high quality syngas production based on a bifunctional catalyst

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