Poly(1-trimethylsilyl-1-propyne) of a cis-Rich Configuration — a Membrane Material for the Separation of Butane/Methane Mixtures as Natural Gas Components
- Autores: Makrushin V.P.1, Kossov A.A.1, Levin I.S.1, Bezgin D.A.1, Syrtsova D.A.1, Matson S.M.1
- 
							Afiliações: 
							- Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences
 
- Edição: Volume 13, Nº 3 (2023)
- Páginas: 238-247
- Seção: Articles
- URL: https://kld-journal.fedlab.ru/2218-1172/article/view/674346
- DOI: https://doi.org/10.31857/S2218117223030069
- EDN: https://elibrary.ru/EPVMLN
- ID: 674346
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		                                					Resumo
In this work, for the first time, we studied the permeability of individual lower hydrocarbons and in a C1/C4 mixture for films based on PTMSP of a new cis-enriched configurational composition (the content of cis-units in the samples was 80 and 90%). The methane permeability of freshly prepared cis-regular PTMSP films (90% of cis-units) exposed to air for a month is higher than the corresponding values of PTMSP films with 80% cis-units. The X-ray diffraction data indicate a looser packing of the cis-regular PTMSP. The introduction of the antioxidant Irganox 1076 into PTMSP films leads to a decrease in the initial level of the methane flux. At the same time, the permeability of films with the addition of Irganox 1076 over time (within 1 month) decreases much more slowly compared to films without the addition of an antioxidant. The permeability of individual lower hydrocarbons through PTMSP films without and with the addition of Irganox 1076 increases in the order С1 < C2 < C3 < C4. The value of the separation factor in the n-butane/methane mixture reaches 33, which is almost 7 times higher than the selectivity for individual components. The high level of n‑butane permeability of cis-enriched PTMSP is maintained for at least a month of films storage in air.
Sobre autores
V. Makrushin
Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences
														Email: matson@ips.ac.ru
				                					                																			                												                								Russia, 119991, Moscow						
A. Kossov
Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences
														Email: matson@ips.ac.ru
				                					                																			                												                								Russia, 119991, Moscow						
I. Levin
Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences
														Email: matson@ips.ac.ru
				                					                																			                												                								Russia, 119991, Moscow						
D. Bezgin
Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences
														Email: matson@ips.ac.ru
				                					                																			                												                								Russia, 119991, Moscow						
D. Syrtsova
Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences
														Email: matson@ips.ac.ru
				                					                																			                												                								Russia, 119991, Moscow						
S. Matson
Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences
							Autor responsável pela correspondência
							Email: matson@ips.ac.ru
				                					                																			                												                								Russia, 119991, Moscow						
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