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Metal‐reinforced sulfonic‐acid‐modified zirconia for the removal of trace olefins from aromatics
Author(s) -
Kong Decun,
Peng Qian,
Shi Li,
Wang Xin,
Meng Xuan,
Hu Xiude,
Liu Naiwang
Publication year - 2020
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201900507
Subject(s) - chemistry , thermogravimetric analysis , catalysis , calcination , sulfonic acid , cubic zirconia , pyridine , fourier transform infrared spectroscopy , inorganic chemistry , brønsted–lowry acid–base theory , adsorption , metal , nuclear chemistry , organic chemistry , chemical engineering , ceramic , engineering
Metal‐reinforced sulfonic‐acid‐modified zirconia catalysts were successfully prepared and used to remove trace olefins from aromatics in a fixed‐bed reactor. Catalysts were characterized by ICP‐OES, N 2 adsorption–desorption, X‐ray diffraction, thermogravimetric analysis (TGA), and pyridine‐FTIR spectroscopy. Different metals and calcination temperatures had great influence on the catalytic activity. Alumina‐reinforced sulfated zirconia exhibited outstanding catalytic performance, stable regeneration activity, and giant surface area, and are promising in industrial catalysis. TGA showed that the decomposition of methyl could be attributed to Brønsted acid sites, and pyridine‐FTIR spectroscopy proved the weak Brønsted sites on these synthesized metal‐reinforced sulfated zirconia. Also, a relation between the reaction rate and weak Brønsted acid density is proposed.