• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Catalysis science & technology >Nonoxidative coupling of ethane with gold loaded photocatalysts
【24h】

Nonoxidative coupling of ethane with gold loaded photocatalysts

机译：乙烷与金载的光催化剂的非氧化偶联

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Direct and continuous conversion of ethane to yield n-butane and hydrogen at near room temperature (ca. 320 K) was examined with gold loaded gallium oxide and titanium dioxide photocatalysts without the aid of any oxidant in a flow reactor. A Ga2O3 photocatalyst produced n-butane and ethene as well as hydrogen with an almost stoichiometric ratio of products from ethane. Loading Au on the Ga2O3 sample gave a 12 times higher production rate of n-butane such as 0.65 μmol h−1 with a high selectivity of 89%. Although a bare TiO2 sample showed very low yield due to poor reduction resistance, the addition of an Au cocatalyst drastically improved the photocatalytic performance of the TiO2 sample, i.e., the Au(0.2)/TiO2 sample produced n-butane and ethene continuously at least for 5 h, where the production rate of n-butane, the n-butane selectivity, and the apparent quantum efficiency (AQE) for n-butane formation were 0.92 μmol h−1, 92%, and 0.02%, respectively. The reaction mechanism of n-butane formation as the main reaction was proposed to be the photocatalytic nonoxidative coupling of ethane (NOCE), which is similar to the photocatalytic nonoxidative coupling of methane (NOCM).
机译：乙烷在近室温度（大约320 K）下向乙烷的直接转化为N-丁烷和氢，并使用金氧化韧带和二氧化钛光催化剂检查，而无需在流动反应器中任何氧化剂。 GA2O3光催化剂产生了N-丁烷和乙烯以及乙烷产物几乎化学计量比的氢。在GA2O3样品上加载AU的N-丁烷的生产速率高12倍，例如0.65μmolH-1，高选择性为89％。尽管裸露的TiO2样品由于耐药性降低而显示出非常低的产量，但添加Au cocatalyst可极大地改善TiO2样品的光催化性能，即Au（0.2）/TiO2样品，至少会连续产生N-丁烯和乙烯在5小时内，N-丁烷的生产速率，N-丁烷选择性和N-丁烷形成的明显量子效率（AQE）分别为0.92μmolH-1、92％和0.02％。提议N-丁烷形成为主要反应的反应机理是乙烷的光催化非氧化偶联（NOCE），该偶联与甲烷（NOCM）的光催化非氧化偶联相似。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号