| 载钯TiO2半导体悬浮催化体系中CO2的光还原 |
| |
| 引用本文： | 徐用军,陈福明,姜琳琳,周定.载钯TiO2半导体悬浮催化体系中CO2的光还原[J].影像科学与光化学,1999,17(1):61-65. |
| |
| 作者姓名： | 徐用军 陈福明 姜琳琳 周定 |
| |
| 作者单位： | 1. 大庆职工大学化工系, 大庆163255;2. 清华大学化学工程系, 北京100084;3. 哈尔滨工业大学应用化学系, 哈尔滨150006 |
| |
| 摘 要： | 在半导体光催化还原CO2的反应过程中,一般都伴有氢气的产生1,2].为了提高CO2还原产物的收率,必须设法抑制析氢过程。在催化剂表面担载某种吸氢物质是抑制氢气产生的有效方法之一。理想的吸氢物质不仅能吸附氢,且被其吸附的氢还具有还原CO2的能力。
|
| 关 键 词： | 二氧化碳 光还原 半导体光催化剂 二氧化钛 钯 |
| 收稿时间： | 1998-03-09 |
PHOTOREDUCTION OF CO2 IN THE SUSPENSION SYSTEM OF SEMICONDUCTOR CATALYST TiO2 MODIFIED BY PALLADIUM |
| |
| XU Yongjun,CHEN Fuming,JIANG Linlin,ZHOU Ding.PHOTOREDUCTION OF CO2 IN THE SUSPENSION SYSTEM OF SEMICONDUCTOR CATALYST TiO2 MODIFIED BY PALLADIUM[J].Imaging Science and Photochemistry,1999,17(1):61-65. |
| |
| Authors: | XU Yongjun CHEN Fuming JIANG Linlin ZHOU Ding |
| |
| Institution: | 1. Daqing Staffs and Workers University, Daqing 163255, P. R. China;2. Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China;3. Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150006, P. R. Ch |
| |
| Abstract: | The experiment of photoreduction of CO 2 was made in the suspension system of Pd/TiO 2 under the illumination of visible light. The findings from the experiments are: (1) Formic acid is the major product of the photoreduction process and its quantum yield is relatively high; (2) The reaction rate increases with the increase of the illumination intensity as well as the feed flowrate of CO 2. It can also be increased by adding an electron donor to the system and the increasing capacity is in the sequence of Na 2C 2O 4>Na 2SO 3>NaH 2PO 2; (3) The photoreduction process was found to be an opposing reaction by dynamics analysis. A model of reaction mechanism, by which the calculated result consisted well with the experimental one, was proposed. |
| |
| Keywords: | carbon dioxide photoreduction semiconductor photocatalyst titanium dioxide palladium |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《影像科学与光化学》浏览原始摘要信息 |
| 点击此处可从《影像科学与光化学》下载免费的PDF全文 |
|
