Application of Zeolite Materials

*Zeolites - New Challenges*

10.1021/jp912026n

ja106272z

[70] Ikeda T, Kayamori S, Oumi Y, Mizukami F. Structure analysis of Si-atom pillared lamellar silicates having micropore structure by powder X-ray diffraction. The Journal of Physical Chemistry C. 2010;**114**:3466-3476. DOI:

Catalysis. 2000;**191**:218-224. DOI:

[77] Archer RH, Carpenter JR, Hwang S, Burton AW, Chen C, Zones SI, et al. Physicochemical properties and catalytic behavior of the molecular sieve SSZ-70. Journal of the American Chemical Society. 2010;**22**:2563-2572.

10.1006/jcat.1999.2774

DOI: 10.1021/cm9035677

chemmater.6b02155

[78] Xu L, Ji X, Li S, Zhou Z, Du X, Sun J, et al. Self-assembly of cetyltrimethylammonium bromide and lamellar zeolite precursor for the preparation of hierarchical MWW zeolite. Chemistry of Materials. 2016;**28**:4512-4521. DOI: 10.1021/acs.

[79] Ji X, Xu L, Du X, Lu X, Lu W, Sun J, et al. Simple CTAB surfactantassisted hierarchical lamellar MWW titanosilicate: A high-performance catalyst for selective oxidations involving bulky substrates. Catalysis Science & Technology. 2017;**7**: 2874-2885. DOI: 10.1039/c7cy00756f

[71] Corma A, Díaz U, García T, Sastre G, Velty A. Multifunctional hybrid organic-inorganic catalytic materials with a hierarchical system of welldefined micro- and mesopores. Journal of the American Chemical Society. 2010;**132**:15011-15021. DOI: 10.1021/

[72] Xu H, Fu L, Jiang J, He M, Wu P. Preparation of hierarchical MWWtype titanosilicate by interlayer silylation with dimeric silane.

2014;**189**:41-48. DOI: 10.1016/j.

[73] Yang B, Jiang J, Xu H, Wu H, He M, Wu P. Synthesis of extra-large-pore zeolite ECNU-9 with intersecting 14\*12 ring channels. Angewandte Chemie, International Edition. 2018;**57**:9515- 9519. DOI: 10.1002/anie.201805535

[74] Yang B, Jiang J, Xu H, Wu H, Wu P. Synthesis of large-pore ECNU-19 material (12×8-R) via interlayerexpansion of HUS-2 lamellar silicate. Chinese Journal of Chemistry. 2018;**36**:227-232. DOI: 10.1002/

[75] Liu G, Jiang J, Yang B, Fang X, Xu H, Peng H, et al. Hydrothermal synthesis of MWW-type stannosilicate and its poststructural transformation to MCM-56 analogue. Microporous and Mesoporous Materials. 2013;**165**:210-218. DOI: 10.1016/j.micromeso.2012.08.025

[76] Corma A, Diaz U, Fornés V, Guil JM, Martínez-Triguero J, Creyghton EJ. Characterization and catalytic activity of MCM-22 and MCM-56 compared with ITQ-2. Journal of

micromeso.2013.09.041

cjoc.201700607

Microporous and Mesoporous Materials.

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**95**

**Chapter 6**

**Abstract**

Applications

is included in this chapter.

pollution control

**1. Introduction**

*Nandini Das and Jugal Kishore Das*

Zeolites: An Emerging Material

for Gas Storage and Separation

Zeolites are one of the amazing materials available in nature because of their structural pores. Interestingly, these god-gifted properties of zeolite can be used in gas separation and storage application. Actually, hydrogen separation and its storage are now a thrust research area. Hydrogen is considered as a 'clean energy,' which is indispensable for global affluence and alternative energy for future. But hydrogen is not accessible in its pure form during the industrial synthesis process and comes out with some other impurities like CO2 (GHG) and other gases. So, the production of carbon-free hydrogen and its storage is so much vital. In conventional technologies, few concerns are always existed during gas separation and also in storage process. Recently, membrane-based separation process is a highly demanding technology in the industry and shows some advantages as compared to conventional process. Based on this concept, in this chapter, three different types of zeolites, that is, DDR, SAPO 34, and Bikitaite are highlighted. Here, we described the advanced synthesis process and the mechanism towards the development of high-quality nearly defect-free membranes on cheaper support. Finally, the evaluation of membranes is described through gas permeation and selectivity results of different single gas and mixture gas composition. In addition, storage capacity of H2 by zeolite/surface-modified zeolites

**Keywords:** zeolite membrane, gas separation, gas storage, clean energy,

Gas separation and storage processes are essentially important to various aspects in human society, such as energy consumption, environmental security, and industrial production. Energy and environmental concerns are currently at the forefront of global attention. So, carbon dioxide separation is crucial to the mitigation of greenhouse effect [1–3]. Besides, separation of hydrogen and methane together with storage is indispensable for the prevalent use of clean energy. In the case of toxic gases, the separation and storage of ammonia and carbon monoxide are important for pollution control and the synthesis of industrial chemicals. The conventional gas separation technologies such as pressure swing adsorption (PSA), cryogenic distillation, etc. are very energy intensive as well as capital intensive. Also separation methods like liquid adsorbent are cost-effective. In the distillation process, the
