On-Line Photoionization Mass Spectrometric Study on Behavior of Ammonia Poisoning on H-Form Ultra Stable Y Zeolite for Catalytic Pyrolysis of Polypropylene |
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| Authors: | Yi-zun Wang Jiu-zhong Yang Yang Pan Hao Ma Yu-yang Li Fei Qi |
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| Affiliation: | 1.State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China2.National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China3.Key Laboratory for Power Machinery and Engineering of Education, Shanghai Jiao Tong University, Shanghai 200240, China |
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| Abstract: | In this work, pyrolysis photoionization time-of-flight mass spectrometry (Py-PI-TOFMS) was applied to study the behavior of ammonia poisoning on H-form ultra stable Y (HUSY) zeolite for the catalytic pyrolysis of polypropylene (PP). Firstly, ammonia poisoning on HUSY was performed to obtain the suitable catalysts with different strength and amounts of acid sites. Secondly, online photoionization mass spectra for the pyrolysis products of PP and HUSY with various acid strength were recorded at different pyrolysis temperatures. Finally, the formation curves of various pyrolysates of PP/HUSY with the increase of temperature were determined. Our results indicate that the formation temperatures, yields and selectivity of the pyrolysis products of PP demonstrate obvious relationship with the acid strength of HUSY. |
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| Keywords: | H-form ultra stable Y zeolite zeolites Polypropylene Catalytic pyrolysis Ammonia poisoning Photoionization mass spectrometry |
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