Preparation of polybenzimidazole‐based mixed matrix membranes containingmodified‐COK‐12 mesoporous silica and evaluation of the mixed‐gas separation performance

Polymers for Advanced Technologies - Tập 33 Số 5 - Trang 1412-1426 - 2022
Griselda Castruita‐de León1, Ángel de Jesús Montes‐Luna2,3, Claudia Y. Yeverino‐Miranda2, G. Alvarado-Tenorio2, H. Iván Meléndez-Ortíz1, Odilia Pérez‐Camacho2, L.A. Garcı́a-Cerda2
1CONACyT–Centro de Investigación en Química Aplicada, Saltillo, Mexico
2Centro de Investigacián en Química Aplicada, Saltillo Coahuila Unidad de Materiales Mexico
3Centro de Investigación Científica de Yucatán, A.C., Unidad de Materiales, Mérida, Mexico

Tóm tắt

AbstractThis work reports the preparation and characterization of mixed matrix membranes (MMMs) based on mesoporous ordered COK‐12 silica modified with 3‐aminopropyltrimethoxysilane as filler, and a series of polybenzimidazoles with different main‐chain structure as polymer matrix. Polybenzimidazoles (PBIs) were prepared from 3,3′‐diaminobenzidine and several dicarboxylic acids with different chemical structure. The physicochemical studies, as well as thermal, structural, and morphological properties of MMMs were determined by Fourier transform infrared spectroscopy, thermogravimetric analysis, X‐ray diffraction (XRD), and scanning electron microscopy. In addition, gas permeability properties of MMMs were tested by using a gas mixture of CO2/CH4at different upstream pressures. Results indicated that thermal stability of PBI above 400°C is kept even after the addition of the modified COK‐12 silica. Thed‐spacing of the PBI membranes determined by XRD was slightly increased with the addition of the modified COK‐12 silica particles. The permeability tests carried out at operating pressures of 50 and 150 psi showed that the addition of amino‐modified COK‐12 silica particles improved significantly the CO2permeability of MMMs with respect to the pristine PBI. At the same time, the selectivity values were also enhanced, which in some cases were found to be more than double compared to the respective pristine membrane. The contribution of the modified COK‐12 silica on the gas transport properties was more promising in MMMs comprising PBIs with less rigid backbone chemical structure.

Từ khóa


Tài liệu tham khảo

10.1016/j.fuel.2011.12.074

10.1021/ma501488s

10.1016/j.cep.2017.07.009

10.1002/ceat.201700406

10.1016/j.progpolymsci.2014.01.003

Vrbová V, 2017, Upgrading biogas to biomethane using membrane separation, Fuel Cells, 31, 9393, 10.1021/acs.energyfuels.7b00120

10.1016/j.progpolymsci.2014.10.005

10.1016/j.polymer.2010.06.053

10.1002/fuce.201300054

10.1016/j.polymer.2017.04.075

10.1016/j.memsci.2014.03.008

10.1016/j.reactfunctpolym.2016.05.006

10.1016/j.jpowsour.2018.05.011

10.1016/j.memsci.2016.04.041

10.1016/j.polymer.2016.03.093

10.1016/j.memsci.2015.07.020

10.1039/C7TA03874G

10.1016/j.memsci.2008.12.005

10.1016/j.memsci.2009.11.043

10.1016/j.pmatsci.2020.100713

10.1016/j.cjche.2017.07.006

10.1021/acs.iecr.7b02074

10.1016/j.seppur.2019.116347

10.1021/acs.iecr.8b04209

10.1016/j.ijhydene.2012.10.045

10.1016/j.memsci.2008.12.073

10.1002/app.50155

10.1016/j.pmatsci.2018.11.002

10.1016/j.jece.2020.104951

10.1038/359710a0

10.1016/j.micromeso.2020.110751

10.1002/app.48286

10.1016/j.seppur.2020.117999

10.1016/j.memsci.2013.07.011

10.1039/b915273c

10.1016/j.micromeso.2019.01.050

10.1021/ja205627t

10.1016/j.micromeso.2016.11.021

10.1016/j.cej.2015.01.069

10.1016/j.ijggc.2015.09.013

10.1351/pac198254112201

10.1016/j.micromeso.2017.08.006

10.1002/app.33246

10.1016/j.polymer.2015.06.021

10.1016/j.seppur.2016.09.037

10.1016/j.cjche.2020.05.016

10.1016/j.seppur.2017.07.051

10.1002/fuce.201300054

10.1016/j.ijhydene.2011.03.016

10.1016/j.polymer.2009.01.043

10.1016/j.memsci.2008.04.030

10.1016/j.polymer.2018.10.033

10.1016/j.micromeso.2017.04.001

10.1016/j.memsci.2015.01.007

10.1016/j.memsci.2015.08.008

10.3390/membranes8040128

10.1016/j.memsci.2015.08.019

10.1016/j.molstruc.2004.05.043

10.1186/s11671-016-1613-4

10.1016/j.seppur.2020.117582

10.1021/ie061494x

10.1016/j.polymer.2008.01.052

10.1016/j.memsci.2006.09.030

10.1016/j.memsci.2010.04.014

10.1016/j.eurpolymj.2016.02.008

10.1039/C9EE01384A