Cu掺杂SBA-15催化剂上甲烷选择氧化制甲醛  

Study on the selective oxidation of methane to formaldehyde over Cu doped SBA-15 catalyst

作　　者：孔莲 王敬狄 李东 赵进 金晔 陈培 赵震 KONG Lian;WANG Jingdi;LI Dong;ZHAO Jin;JIN Ye;CHEN Pei;ZHAO Zhen(College of Chemistry and Chemical Engineering,Shenyang Normal University,Shenyang 110034,China;State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China;Shaanxi Coal Chemical Industry Technology Research Institute Co.,Ltd.,Xi'an 710100,China)

机构地区：[1]沈阳师范大学化学化工学院,沈阳110034 [2]中国石油大学(北京)重质油国家重点实验室,北京102249 [3]陕西煤业化工技术研究院有限责任公司,西安710100

出　　处：《沈阳师范大学学报(自然科学版)》2024年第6期481-487,共7页Journal of Shenyang Normal University:Natural Science Edition

基　　金：国家自然科学基金资助项目(22472107)。

摘　　要：采用水热法成功合成了Cu掺杂介孔SiO_(2)(x Cu-SBA-15)催化剂,并探究了Cu掺杂量对Cu-SBA-15催化剂上甲烷选择氧化性能的影响。研究结果表明:Cu原子掺杂到SBA-15的骨架中形成了高度分散的CuO_(x)物种,适量的Cu掺杂可以有效提升甲醛的选择性;700℃时,0.1Cu-SBA-15催化剂上获得最高的甲醛选择性,为27%;稳定性测试结果和原位X射线衍射表征结果表明,Cu-SBA-15催化剂具有优异的反应稳定性和抗积碳稳定性。A series of Cu-doped mesoporous SiO_(2)(x Cu-SBA-15)catalysts were successfully synthesized via hydrothermal method.The effect of Cu doping on the selective oxidation performance of methane over x Cu-SBA-15 catalysts was investigated.The results showed that the successful incorporation of Cu atoms into the framework of SBA-15 formed highly dispersed CuO_(x) species.Moreover,appropriate Cu doping can effectively improve the selectivity towards formaldehyde.At 700℃,the highest selectivity towards formaldehyde(27%)was obtained over 0.1Cu-SBA-15 catalyst.The stability test and in-situ X-ray diffraction characterization demonstrated the exceptional reaction stability and resistance to carbon deposition of the Cu-SBA-15 catalyst.

关 键 词：甲烷选择氧化 甲醛 CU掺杂 SBA-15 

分 类 号：O643.3[理学—物理化学]