Copper-catalyzed propylene epoxidation by molecular oxygen:: Superior catalytic performances of halogen-free K+-modified CuOx/SBA-15
Copper-catalyzed propylene epoxidation by molecular oxygen:: Superior catalytic performances of halogen-free K+-modified CuOx/SBA-15
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铜催化分子氧丙烯环氧化：无卤 K 改性 CuOx/SBA-15 的优异催化性能
DOI：
10.1016/j.jcat.2006.04.028
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发表时间：
2006-07-01
影响因子：
7.3
通讯作者：
Wang, Ye
中科院分区：
文献类型：
--
作者：
Chu, Hui;Yang, Lujuan;Wang, Ye
无卤K+修饰的CuOx/SBA-15对丙烯分子氧环氧化反应的催化性能明显优于目前报道的其他cu基催化剂。当丙烯转化率从1%提高到12%时，该催化剂对环氧丙烷（PO）的选择性适中（约15-50%），PO的生成速率为2.1 mmol g(-1) h（-1）。目前的催化剂不需要预还原，在高O-2分压或高O-2富气氛下都能保持PO的选择性。(c) 2006爱思唯尔公司所有航班预订。
A halogen-free K+-modified CuOx/SBA-15 exhibits significantly better catalytic performance than other Cu-based catalysts reported so far for the epoxidation of propylene by molecular oxygen. Moderate selectivity (ca. 15-50%) to propylene oxide (PO) can be sustained as propylene conversion increases from ca. 1 to 12%, and a PO formation rate of 2.1 mmol g(-1) h(-1) has been obtained over this catalyst. The current catalyst does not require prereduction, and the PO selectivity can be kept at a high O-2 partial pressure or a highly O-2-rich atmosphere. (c) 2006 Elsevier Inc. All fights reserved.