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High H_(2) selective performance of Ni-Fe-Ca/H-Al catalysts for steam reforming of biomass and plastic

Journal of Energy Chemistry 2023年第5期80卷 215-227,I0006页

作者： Jin Deng Lingshuai Meng Duo Ma Yujie Zhou Xianyang Wang Xiaodong Luo Shenfu Yuan School of Chemical Science and Engineering Yunnan Provincial Key Laboratory of Carbon Neutral and Green Low-Carbon TechnologyKey Laboratory of Medicinal Chemistry for Natural ResourceMinistry of EducationNational Center for Experimental Chemistry and Chemical Engineering Education DemonstrationYunnan Characteristic Plant Extraction LaboratorySchool of PharmacyYunnan University650091 KunmingYunnanChina

The development of a selective catalyst for the conversion of biomass and plastics into H2by steam reforming can combat the energy crisis and global *** this work,support Ni-Fe-Ca/H-Al bifunctional catalysts were prepared by loading Ni and Fe into pretreatment CaO/Al_(2)O_(3)(Ca/H-Al)carriers and showed high catalytic activity for the steam reforming of biomass and ***,the idea of bidirectional degradation was exploited to strengthen the pyrolysis of plastic with a high H/C and biomass with a high O/***,the products presented high H2selective(1302.10 m L/g)and low CO_(2)yield(120.23 m L/g)in 7Ni-5Fe-Ca/H-Al(2:4)catalyst compared with current ***,the abundant oxygen vacancies(Ov)in the H-Al carrier exhibited an electron-deficient nature,providing active sites for anchoring Ni ***,Ni O interacted with Ca_(2)Fe_(2)O_(5)to produce more defective Ovsites,which stabilized the NiO particles in the 7Ni-5Fe-Ca/H-Al(2:4)catalyst,and the interaction between the catalyst and the carrier was enhanced,leading to the reduction of weakly basic sites,this property promoted the strong adsorption of CO_(2)and H2O by the catalyst,contributing to the enhancement of efficient steam conversion and the promotion of conversion of by-products to ***,7Ni-5Fe-Ca/H-Al(2:4)catalysts maintained structural integrity after regeneration and exhibited excellent regenerability in H2selection and CO_(2)*** work provides a new idea for the study of efficient H2production from steam reforming of biomass and plastics.

关键词： biomass and plastic Pyrolysis Steam reforming Ni-Fe-Ca/H-Al catalyst H_(2)selective

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