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AuPd bimetal immobilized on amine‐functionalized SBA‐15 for hydrogen generation from formic acid: The effect of the ratio of toluene to DMF
Author(s) -
Liu Mo,
Zhang Qiulin,
Shi Yuzhen,
Wang Huimin,
Wei Guangcheng,
Zhang Tengxiang,
Sun Haiyang,
Wang Jifeng,
Zhang Yaqing
Publication year - 2020
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.23678
Subject(s) - formic acid , bimetal , amine gas treating , toluene , catalysis , chemistry , nuclear chemistry , hydrogen , inorganic chemistry , polymer chemistry , organic chemistry
Abstract The volume ratio of toluene to N,N‐dimethylformamide (DMF) was adjusted during the amine functionalization of SBA‐15 to change the amine content of SBA‐15. XPS, FTIR, and TGA analyses indicated that under the experimental synthetic conditions the number of amine groups varies with the ratio of toluene/DMF, and the highest content of amine could be obtained with a volume ratio of toluene/DMF = 3:2. The hydrogen production experiment of formic acid decomposition showed that the hydrogen production efficiency over the Au‐Pd‐SBA‐15‐NH 2 catalysts increased with the increase in the surface amine content of the Au‐Pd‐SBA‐15‐NH 2 . The optimal Au‐Pd‐SBA‐15‐NH 2 ‐TD (toluene/DMF = 3:2) catalyst proved to have the smallest Au‐Pd bimetal nanoparticle size and exhibited a turnover frequency (TOF) = 631 hours −1 and an activation energy (Ea) = 20.8 kJ · mol −1 at 25°C. The catalytic performance of hydrogen generation from the formic acid was improved due to the synergistic effect between the amine‐functionalized SBA‐15 and the Au‐Pd bimetal (metal‐support interactions).