Bimetallic PdAg clusters loaded on hierarchical self-pillared pentasil zeolite as efficient catalysts for formic acid dehydrogenation

IF 3.4 3区 化学 Q2 CHEMISTRY, PHYSICAL
Shiyu Wan , Peng Lu , Dongyan Xu , Valentin Valtchev
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引用次数: 0

Abstract

In the present study, siliceous self-pillared pentasil (SPP) zeolite with regular mesopores was synthesized and used as a support for anchoring bimetallic PdAg clusters through a facile impregnation-reduction method. The as-prepared PdAg/SPP catalysts with different Pd/Ag ratios were demonstrated to catalyze formic acid dehydrogenation for hydrogen production. XRD results confirmed the formation of PdAg alloy on the surface of SPP zeolite. The Pd7Ag3/SPP catalyst showed high activity at 80 °C with an initial turn-over frequency (TOF) of 1263.6 h−1, proving the strategy using hierarchical SPP zeolite as carrier is advantageous over bulky zeolites for making highly active formic acid dehydrogenation catalysts.

Abstract Image

负载在分层自填料五硅沸石上的双金属钯银簇作为甲酸脱氢的高效催化剂
本研究通过简便的浸渍-还原法合成了具有规则中孔的硅质自柱五硅沸石(SPP),并将其用作锚定双金属钯金簇的载体。实验证明,所制备的不同钯/银比例的钯/SPP 催化剂可催化甲酸脱氢制氢。XRD 结果证实在 SPP 沸石表面形成了 PdAg 合金。PdAg/SPP 催化剂在 80 ℃ 时表现出较高的活性,初始翻转频率(TOF)为 1263.6 h,这证明了以分层 SPP 沸石为载体的策略在制造高活性甲酸脱氢催化剂方面比笨重的沸石更有优势。
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来源期刊
Catalysis Communications
Catalysis Communications 化学-物理化学
CiteScore
6.20
自引率
2.70%
发文量
183
审稿时长
46 days
期刊介绍: Catalysis Communications aims to provide rapid publication of significant, novel, and timely research results homogeneous, heterogeneous, and enzymatic catalysis.
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