Hydrogen from Formic Acid via Its Selective Disproportionation over Nanodomain-Modified Zeolites

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• 作者：Ruth I. J. Amos ; Falk Heinroth ; Bun Chan ; Antony J. Ward ; Sisi Zheng ; Brian S. Haynes ; Christopher J. Easton ; Anthony F. Masters ; Thomas Maschmeyer ; Leo Radom
• 刊名：ACS Catalysis
• 出版年：2015
• 出版时间：July 2, 2015
• 年：2015
• 卷：5
• 期：7
• 页码：4353-4362
• 全文大小：440K
• ISSN：2155-5435

文摘

Sodium germanate is a nontransition-metal catalyst that is active in the selective dehydrogenation of formic acid. However, bulk sodium germanate has a very low surface area, limiting the availability of the germanate sites for catalysis. The dispersion of germanate in the zeolite ZSM-5 has been investigated both computationally and experimentally as a method for the provision of greater surface area and, therefore, higher activity per germanate site. Nanodomain islets of germanate dispersed in the germanium ZSM-5 zeolite invert selectivity from dehydration (in ZSM-5) to dehydrogenation of formic acid, potentially making Na-Ge-ZSM-5 a cost-effective catalyst for releasing hydrogen from formic acid.