Hydrogen-selective zeolite membrane reactor for low temperature water gas shift reaction

aThe latest developments in zeolite membranes are reviewed, with an emphasis on the synthesis techniques, including seed assembly and secondary growth methods. This review also discusses the current industrial applications of zeolite membranes, the feasibility of their use in membrane reactors and their hydrothermal stability. Finally, zeolite membranes are compared with metal-organic framework (MOF) membranes and the latest advancements in MOF and mixed matrix membranes are highlighted.

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“…11). 265 For the applications mentioned above, long term thermal and hydrothermal stability are important and they are addressed next.…”

Section: Zeolite Membrane Reactors For the Intensification Of Chemicamentioning

confidence: 99%

Zeolite membranes – a review and comparison with MOFs

et al. 2015

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“…This membrane reactor showed good thermal stability during long-term operation at high temperature and in a humid environment [106]. At almost the same time, Dong et al reported similar work using a modified MFI membrane for a membrane reactor in high-temperature WGSR [108], while Xu et al used a modified ZSM-5 membrane-based reactor for low-temperature WGSR [109]. Table 5.…”

Section: Gas Kinetic Diameter (å)mentioning

confidence: 97%

“…Chemical vapour decomposition (CVD) and chemical cracking decomposition (CCD) are widely used to improve the performance of the ZSM-5 membrane, as these modification methods can result in an impressive improvement in H 2 /CO 2 selectivity [106][107][108][109]. Lin et al post-treated ZSM-5 membranes in two steps.…”

Section: Gas Kinetic Diameter (å)mentioning

confidence: 99%

A Review on the Production and Purification of Biomass-Derived Hydrogen Using Emerging Membrane Technologies

Yin

Yip

2017

Catalysts

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Abstract:Hydrogen energy systems are recognized as a promising solution for the energy shortage and environmental pollution crises. To meet the increasing demand for hydrogen, various possible systems have been investigated for the production of hydrogen by efficient and economical processes. Because of its advantages of being renewable and environmentally friendly, biomass processing has the potential to become the major hydrogen production route in the future. Membrane technology provides an efficient and cost-effective solution for hydrogen separation and greenhouse gas capture in biomass processing. In this review, the future prospects of using gas separation membranes for hydrogen production in biomass processing are extensively addressed from two perspectives: (1) the current development status of hydrogen separation membranes made of different materials and (2) the feasibility of using these membranes for practical applications in biomass-derived hydrogen production. Different types of hydrogen separation membranes, including polymeric membranes, dense metal membranes, microporous membranes (zeolite, metal-organic frameworks (MOFs), silica, etc.) are systematically discussed in terms of their fabrication methods, gas permeation performance, structure stability properties, etc. In addition, the application feasibility of these membranes in biomass processing is assessed from both practical and economic perspectives. The benefits and possibilities of using membrane reactors for hydrogen production in biomass processing are also discussed. Lastly, we summarize the limitations of the currently available hydrogen membranes as well as the gaps between research achievements and industrial application. We also propose expected research directions for the future development of hydrogen gas membrane technology.

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“…In addition, biohydrogen production via dark fermentation is considered a more viable approach of producing energy (Azbar et al, 2009;Wang et al, 2010;Zhang et al, 2012;Sekoai and Gueguim Kana, 2013) because it produces a clean hydrogen, it uses diverse feedstocks for its process including waste materials, and requires low-energy. Thus, it is more competitive to commercial hydrogen producing methods such as electrochemical, thermochemical, photochemical, photocatalytic, and photo-electrochemical processes (Das and Veziroglu, 2001;Dong et al, 2009).…”

Section: Biohydrogen As a Potential Energy Fuelmentioning

confidence: 99%