TY - JOUR
T1 - Study of catalytic combustion of chlorobenzene and temperature programmed reactions over CrCeOx/AlFe pillared clay catalysts
AU - Qiu, Yingnan
AU - Ye, Na
AU - Situ, Danna
AU - Zuo, Shufeng
AU - Wang, Xianqin
N1 - Funding Information:
Acknowledgments: We would like to acknowledge the financial support from Innovation Team of Huzhou South Taihu Elite Program. Moreover, we would also grateful to Zhejiang Da-Feng Automobile Technology Co., Ltd for the related experiment and test.
Funding Information:
Funding: Zhejiang Public Welfare Technology Research Project (LGG19B070003), the Foundation of Science and Technology of the Shaoxing City (2018C10019) and 2018 Zhejiang Province Innovation Training Program for College Students (2018R432031).
Publisher Copyright:
© 2019 by the authors.
PY - 2019/3/1
Y1 - 2019/3/1
N2 - In this study, both AlFe composite pillaring agents and AlFe pillared clays (AlFe-PILC) were synthesized via a facile process developed by our group, after which mixed Cr and Ce precursors were impregnated on AlFe-PILC. Catalytic combustion of organic pollutant chlorobenzene (CB) on CrCe/AlFe-PILC catalysts were systematically studied. AlFe-PILC displayed very high thermal stability and large BET surface area (SBET). After 4 h of calcination at 550 °C, the basal spacing (d001) and SBET of AlFe-PILC was still maintained at 1.91 nm and 318 m2/g, respectively. Large SBET and d001-value, along with the strong interaction between the carrier and active components, improved the adsorption/desorption of CB and O2. When the desorption temperatures of CB and O2 got closer to the CB combustion temperature, the CB conversion could be increased to a higher level. CB combustion on CrCe/AlFe-PILC catalyst was determined using a Langmuir-Hinshelwood mechanism. Adsorption/desorption/oxidation properties were critical to design highly efficient catalysts for CB degradation. Besides, CrCe/AlFe-PILC also displayed good durability for CB combustion, whether in a humid environment or in the presence of volatile organic compound (VOC), making the catalyst an excellent material for eliminating chlorinated VOCs.
AB - In this study, both AlFe composite pillaring agents and AlFe pillared clays (AlFe-PILC) were synthesized via a facile process developed by our group, after which mixed Cr and Ce precursors were impregnated on AlFe-PILC. Catalytic combustion of organic pollutant chlorobenzene (CB) on CrCe/AlFe-PILC catalysts were systematically studied. AlFe-PILC displayed very high thermal stability and large BET surface area (SBET). After 4 h of calcination at 550 °C, the basal spacing (d001) and SBET of AlFe-PILC was still maintained at 1.91 nm and 318 m2/g, respectively. Large SBET and d001-value, along with the strong interaction between the carrier and active components, improved the adsorption/desorption of CB and O2. When the desorption temperatures of CB and O2 got closer to the CB combustion temperature, the CB conversion could be increased to a higher level. CB combustion on CrCe/AlFe-PILC catalyst was determined using a Langmuir-Hinshelwood mechanism. Adsorption/desorption/oxidation properties were critical to design highly efficient catalysts for CB degradation. Besides, CrCe/AlFe-PILC also displayed good durability for CB combustion, whether in a humid environment or in the presence of volatile organic compound (VOC), making the catalyst an excellent material for eliminating chlorinated VOCs.
KW - AlFe-pillared clay
KW - Catalytic combustion
KW - Chlorobenzene
KW - CrCeOx
KW - Temperatureprogrammed reaction
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U2 - 10.3390/ma12050728
DO - 10.3390/ma12050728
M3 - Article
AN - SCOPUS:85067359639
SN - 1996-1944
VL - 12
JO - Materials
JF - Materials
IS - 5
M1 - 728
ER -