Molecular sieve membranes for N2/CH4 separation
نویسندگان
چکیده
منابع مشابه
Molecular Sieve Silica Membranes For H2/CO Separation
Membranes have been used for gas separation for quite some time but have seen major growth during the 90’s [1]. For many industrial applications involving gas streams, it is important that membranes resist high temperatures and corrosive environments. As in Table 1, organic membranes are not heat resistant at high temperatures while zeolite membranes have pore sizes too large to separate gases ...
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In this work we compare the hydrothermal stability performance of a Templated Molecular Sieve Silica (TMSS) membrane against a standard, non-templated Molecular Sieve Silica (MSS) membrane. The tests were carried under dry and wet (steam) conditions and characterised using pure gases (He, H2, CO and CO2) at 1-2 atm membrane pressure drop at 200°C. Single gas TMSS membrane H2, permeance and H2/C...
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Natural gas consumption has grown from 5.0 trillion cubic feet (TCF) in 1949 to 27.0 TCF in 2014 and is expected to be ;31.6 TCF in 2040. This large demand requires an effective technology to purify natural gas. Nitrogen is a significant impurity in natural gas and has to be removed since it decreases the natural gas energy content. The benchmark technology to remove nitrogen from natural gas i...
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MSS membranes are a good candidate for CO cleanup in fuel cell fuel processing systems due to their ability to selectively permeate H2 over CO via molecular sieving. Successfully scaled up tubular membranes were stable under dry conditions to 400°C with H2 permeance as high as 2 x 10 -6 mol.m.s.Pa at 200°C and H2/CO selectivity up to 6.4, indicating molecular sieving was the dominant mechanism....
متن کاملPhoto-oxidative enhancement of polymeric molecular sieve membranes.
High-performance membranes are attractive for molecular-level separations in industrial-scale chemical, energy and environmental processes. The next-generation membranes for these processes are based on molecular sieving materials to simultaneously achieve high throughput and selectivity. Membranes made from polymeric molecular sieves such as polymers of intrinsic microporosity (pore size<2 nm)...
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ژورنال
عنوان ژورنال: Journal of Materials Research
سال: 2017
ISSN: 0884-2914,2044-5326
DOI: 10.1557/jmr.2017.297