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用于木糖醇水相重整的西布尼特负载的单金属和双金属催化剂。

Sibunit-Supported Mono- and Bimetallic Catalysts Used in Aqueous-Phase Reforming of Xylitol.

作者信息

Godina Lidia I, Kirilin Alexey V, Tokarev Anton V, Simakova Irina L, Murzin Dmitry Yu

机构信息

Laboratory of Industrial Chemistry and Reaction Engineering, Process Chemistry Centre, Åbo Akademi University, FI-20500 Turku, Finland.

Boreskov Institute of Catalysis, pr. Lavrentieva 5, Novosibirsk 630090, Russia.

出版信息

Ind Eng Chem Res. 2018 Feb 14;57(6):2050-2067. doi: 10.1021/acs.iecr.7b04937. Epub 2018 Jan 25.

DOI:10.1021/acs.iecr.7b04937
PMID:30270980
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6156104/
Abstract

Carbon-supported mono- and bimetallic catalysts prepared via incipient wetness impregnation were systematically studied in aqueous-phase reforming (APR) of xylitol aiming at hydrogen production from biomass. The catalytic performance of several VIII group metals and their combinations, such as Pt, Ni, Pt-Ni, Re, Pt-Re, Ru, Pt-Ru, and Pt-Co, was compared for xylitol APR in a fixed-bed reactor at 225 °C and 29.7 bar (N). Ni/C, Ru/C, and Re/C catalysts displayed significantly lower activity compared to others. Activity and selectivity to H of bimetallic Pt-Ni/C, Pt-Co/C, and Pt-Ru/C catalysts were close to that of Pt/C. Pt-Re/C catalyst showed an outstanding performance which was accompanied by a shift of the reaction pathways to the alkane formation and thereby lower hydrogen selectivity. Addition of the second metal to Pt was not found to be beneficial for hydrogen production, thus leaving Pt/C as the optimum carbon-supported catalyst.

摘要

通过初湿浸渍法制备的碳负载单金属和双金属催化剂，针对木糖醇的水相重整（APR）制氢过程进行了系统研究，该过程旨在从生物质中制取氢气。在固定床反应器中，于225℃和29.7巴（N）的条件下，比较了几种Ⅷ族金属及其组合（如Pt、Ni、Pt-Ni、Re、Pt-Re、Ru、Pt-Ru和Pt-Co）在木糖醇水相重整反应中的催化性能。与其他催化剂相比，Ni/C、Ru/C和Re/C催化剂的活性显著较低。双金属Pt-Ni/C、Pt-Co/C和Pt-Ru/C催化剂对H的活性和选择性与Pt/C接近。Pt-Re/C催化剂表现出优异的性能，同时反应路径向烷烃生成方向转变，从而导致氢气选择性降低。未发现向Pt中添加第二种金属对制氢有益，因此Pt/C仍是最佳的碳负载催化剂。

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