Interaction between carbon dioxide and magnesium oxide prepared by low-temperature thermal decomposition of magnesium hydroxide and carbonate

Medvinskii, A. A.; Saveliev, G. G.; Стась, Н. Ф.; Tyunina, O. V.; Nakhalov, V. V.; Kononova, I. A.; Khalfina, P. D.

doi:10.1007/bf02084189

Cited by 4 publications

(1 citation statement)

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“…Magnesia or MgO is a crystalline material, which is synthesized via calcination or thermal decomposition of magnesium hydroxide, Mg(OH) 2 , or magnesium carbonate, MgCO 3 . Similar to fumed silica, MgO possesses basic surface sites that present strong affinity and interaction toward polar gas species such as CO 2 . , Compared to other metal oxides with similar chemical properties (e.g., calcium oxide, CaO), MgO exhibits a lower energy penalty for regeneration . However, MgO agglomerates easily and is hygroscopic, making it unstable and susceptible to water adsorption when exposed to moisture.…”

Section: Filler Materialsmentioning

confidence: 99%

Harnessing Filler Materials for Enhancing Biogas Separation Membranes

et al. 2018

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Biogas is an increasingly attractive renewable resource, envisioned to secure future energy demands and help curb global climate change. To capitalize on this resource, membrane processes and state-of-the-art membranes must efficiently recover methane (CH) from biogas by separating carbon dioxide (CO). Composite (a.k.a. mixed-matrix) membranes, prepared from common polymers and rationally selected/engineered fillers, are highly promising for this application. This review comprehensively examines filler materials that are capable of enhancing the CO/CH separation performance of polymeric membranes. Specifically, we highlight novel synthetic strategies for engineering filler materials to develop high-performance composite membranes. Besides, as the matrix components (polymers) of composite membranes largely dictate the overall gas separation performances, we introduce a new empirical metric, the "Filler Enhancement Index" ( F), to aid researchers in assessing the effectiveness of the fillers from a big data perspective. The F systematically decouples the effect of polymer matrices and critically evaluates both conventional and emerging fillers to map out a future direction for next-generation (bio)gas separation membranes. Beyond biogas separation, this review is of relevance to a broader community with interests in composite membranes for other gas separation processes, as well as water treatment applications.

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