Equivalence of difluorodichloromethane (CFC-12) hydrolysis catalyzed by solid acid(base) MoO3(MgO)/ZrO2

被引:2
作者
Li, Zhiqian [1 ]
Tan, Xiaofang [1 ]
Ren, Guoqin [1 ]
Chang, Yu [2 ]
Jia, Lijuan [1 ]
Duan, Kaijiao [1 ]
Liu, Tiancheng [1 ]
机构
[1] Yunnan Minzu Univ, Coll Chem & Environm, Natl & Local Joint Engn Res Ctr Green Preparat Te, Kunming 650500, Yunnan, Peoples R China
[2] Yunnan Technician Coll, Kunming 650500, Yunnan, Peoples R China
关键词
DICHLORODIFLUOROMETHANE CFC-12; ATMOSPHERIC CHEMISTRY; CCL2F2; CFC-12; OZONE-LAYER; DECOMPOSITION; DESTRUCTION; CHLORINE; HYDRODECHLORINATION;
D O I
10.1039/d0ra05947a
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In this paper, a solid acid(base) MoO3(MgO)/ZrO(2)was prepared for the catalytic hydrolysis of difluorodichloromethane (CFC-12). The effects of the catalyst preparation method, calcination temperature, and hydrolysis temperature on the conversion rate of CFC-12 were studied. The catalysts were characterized by XRD, N(2)isotherm adsorption desorption, NH3-TPD, and CO2-TPD. Meanwhile, the equivalence of the catalytic activity of MoO3(MgO)/ZrO(2)for CFC-12 was studied. Research shows that the solid acid MoO3/ZrO(2)and solid base MgO/ZrO(2)catalyzed hydrolysis of CFC-12 is equivalent; the solid acid MoO3/ZrO(2)is calcined at 600 degrees C for 3 h and the solid base MgO/ZrO(2)is calcined at 600 degrees C for 6 h (co-precipitation) and 700 degrees C for 6 h (impregnated) at a catalytic hydrolysis temperature of 300-400 degrees C and CFC-12 concentration of 4%. The catalytic hydrolysis products obtained were CO, HCl, and HF, and the CFC-12 conversion rate almost reached 100%.
引用
收藏
页码:33662 / 33674
页数:13
相关论文
共 27 条
[1]   Characterization and reactivity of molybdenum oxide catalysts supported on zirconia [J].
Bhaskar, T ;
Reddy, KR ;
Kumar, CP ;
Murthy, MRVS ;
Chary, KVR .
APPLIED CATALYSIS A-GENERAL, 2001, 211 (02) :189-201
[2]   Hydrodechlorination of CCl2F2 (CFC-12) over Pd-Au/C catalysts [J].
Bonarowska, M ;
Burda, B ;
Juszczyka, W ;
Pielaszek, J ;
Kowalczyk, Z ;
Karpinski, Z .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2001, 35 (01) :13-20
[3]   Hydrodechlorination of CCl2F2 (CFC-12) over silica-supported palladium-gold catalysts [J].
Bonarowska, M ;
Malinowski, A ;
Juszczyk, W ;
Karpinski, Z .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2001, 30 (1-2) :187-193
[4]  
Brillas E., 2003, CHEM DEGRADATION MET, P235
[5]   Use and application of CFC-11, CFC-12, CFC-113 and SF6 as environmental tracers of groundwater residence time: A review [J].
Chambers, L. A. ;
Gooddy, D. C. ;
Binley, A. M. .
GEOSCIENCE FRONTIERS, 2019, 10 (05) :1643-1652
[6]   Climate Change and Atmospheric Chemistry: How Will the Stratospheric Ozone Layer Develop? [J].
Dameris, Martin .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2010, 49 (44) :8092-8102
[7]   Depletion of the Ozone Layer in the 21st Century [J].
Dameris, Martin .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2010, 49 (03) :489-491
[8]   Comparative global warming impact and NOX emissions of conventional and hydrogen automotive propulsion systems [J].
Desantes, J. M. ;
Molina, S. ;
Novella, R. ;
Lopez-Juarez, M. .
ENERGY CONVERSION AND MANAGEMENT, 2020, 221 (221)
[9]   Global Environment Facility investments in the phase-out of ozone-depleting substances [J].
Dixon, Robert K. .
MITIGATION AND ADAPTATION STRATEGIES FOR GLOBAL CHANGE, 2011, 16 (05) :567-584
[10]   Effect of dopants on grain coalescence and oxygen mobility in nanostructured titania anatase and rutile [J].
Guidi, V ;
Carotta, MC ;
Ferroni, M ;
Martinelli, G ;
Sacerdoti, M .
JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (01) :120-124