摘要
用浸渍法结合程序升温碳化法制备1Ni-5Mo_2C/ZrO_2与Mo_2C/ZrO_2,作为CH4和CO_2干重整制合成气反应催化剂。采用X射线衍射(XRD)、BET比表面积(BET)、X显微镜(TEM)对催化剂的结构进行表征,在常压固定床反应器上测试1Ni-5Mo_2C/ZrO_2与Mo_2C/ZrO_2催化剂在900℃时(空速为8000 cm^3·g^(-1)cat·h^(-1))重整CH4/CO_2(CH4∶CO_2=1∶1)的催化活性。研究表明,在甲烷干重整(DRM)反应中,催化剂的催化活性在7 h内保持稳定。由于1Ni-5Mo_2C/ZrO_2催化剂具有合适的孔径,丰富的表面孔以及Ni基载体之间的相互作用,CH_4和CO_2的转化率均达96%以上,H_2和CO现出高催化活性、产率,兼具优良的稳定性能。
A variety of Mo2 C/ZrO2 and 1 Ni-5 Mo2 C/ZrO2 were synthesized via impregnation and carbonization by temperature program method fordry reforming of methane. XRD、BET、XPS、SEM and TEM were used to characterize the structure of the catalysts and the activity and stability of Mo2 C/ZrO2 and 1 Ni-5 Mo2 C/ZrO2. The catalyst activity for dry reforming of methane at 900 ℃(CH4∶CO2=1∶1,space velocity 8000 cm3·g^-1ca t·h^-1)was investigated under atmospheric pressure in a fixed-bed quartz reactor. Due to the appropriate pore size and abundant pores and the interaction between Ni and carrier,CH4,CO2 conversioncan be reached over 96% and H2,CO yield have access to 85% as well. Mo2 C/ZrO2 almost remain stable after 7 h in dry reforming of methane reaction. 1 Ni-5 Mo2 C/ZrO2 catalyst expressed high activity,yield and excellent stability.
作者
陶青青
黄诗琳
闫常峰
郭常青
伊立其
赵效勇
Tao Qingqing;Huang Shilin;Yan Changfeng;Guo Changqing;YiLiqi;Zhao Xiaoyong(Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China;Guangdong Key Laboratory of New and Renewable Energy Research and Development,Guangzhou 510640,China;Key Laboratory of Renewable Energy,Chinese Academy of Sciences,Guangzhou 510640,China;Nano Science and Technology Institute,University of Science and Technology of China,Hefei 230026,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2019年第3期831-837,共7页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51576201)
广东省自然科学基金(2015A0303130716
2015A030312007)
东莞市引进创新科研团队项目(2014607117)
关键词
合成气
碳化物
甲烷
干重整
稳定性
synthesis gas
carbide
methane
dry reframing
stability
