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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact

zeolites --- porous-material --- bi-functional catalysts --- environmental --- green fuel

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Zeolites are hydrated aluminosilicate minerals of the family of microporous solids. According to the US Geological Survey, there are about 40 naturally occurring zeolites, forming in sedimentary and volcanic rocks. The most commonly mined forms include clinoptilolite, chabazite and mordenite. There are over 200 synthetic zeolites. For their abundance, natural and synthetic zeolites are widely used in the industry, agriculture, water treatment, wastewater treatment and as dietary supplements to treat diarrhea, autism, cancer and other. This book Zeolites and Their Applications deals with several aspects of zeolite morphology, synthesis and applications. The book is divided into three sections and structured into nine chapters. The first section includes the introductory chapter, the second section explains mineralogy, morphology and synthesis of zeolites and the third section focuses on the different applications of both natural and synthetic zeolites. So, in this book, the readers will obtain updated information on mineralogy, morphology, synthesis and application of zeolites. Scientists from different scientific fields reported in this book their findings.

Zeolites. --- Silicate minerals --- Composite Materials --- Physical Sciences --- Engineering and Technology --- Materials Science --- Polymers

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In the last decades, inedible lignocellulosic biomasses have attracted significant attention for being abundant resources that are not in competition with agricultural land or food production and, therefore, can be used as starting renewable material for the production of a wide variety of platform chemicals. The three main components of lignocellulosic biomasses are cellulose, hemicellulose and lignin, complex biopolymers that can be converted into a pool of platform molecules including sugars, polyols, alchols, ketons, ethers, acids and aromatics. Various technologies have been explored for their one-pot conversion into chemicals, fuels and materials. However, in order to develop new catalytic processes for the selective production of desired products, a complete understanding of the molecular aspects of the basic chemistry and reactivity of biomass derived molecules is still crucial. This Special Issue reports on recent progress and advances in the catalytic valorization of cellulose, hemicellulose and lignin model molecules promoted by novel heterogeneous systems for the production of energy, fuels and chemicals.

n/a --- hemicellulose --- catalytic transfer hydrogenolysis reactions --- furfural --- ZSM-5 --- syngas --- renewable aromatics --- Diels–Alder --- lignin --- hydroisomerization --- levulinic acid --- bio-oil upgrade --- metal ferrites --- aromatic ethers --- hierarchical zeolites --- Chilean natural zeolites --- bioethanol --- renewable p-xylene --- desilication --- dimethylfuran --- GC/MS characterization --- biomass --- H-donor molecules --- heterogeneous catalysis --- polyols --- Brønsted acids sites --- spinels --- solketal --- glycerol --- chemical-loop reforming --- zeolite --- cellulose --- insulating oils --- hydrogenolysis --- lignocellulosic biomasses --- bio-insulating oil --- glycidol --- Diels-Alder

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This book is a special collection of articles dedicated to the preparation and characterization of nanoporous materials, such as zeolitic-type materials, mesoporous silica (SBA-15, MCM-41, and KIT-6), mesoporous metallic oxides, metal–organic framework structures (MOFs), and pillared clays, and their applications in adsorption, catalysis, and separation processes. This book presents a global vision of researchers from international universities, research centers, and industries working with nanoporous materials and shares the latest results on the synthesis and characterization of such materials, which have given rise to the special interest in their applications in basic and industrial processes.

n/a --- porous silicon --- ?-zeolite --- 4-trimethylimidazolium --- silica pillared clays --- oligomerization --- hydrofluoric media --- KIT-6 --- glass --- adsorption --- synthesis parameters --- seeds --- MCM-41 --- swelling --- liquid-gas interaction --- confined environment --- ionic liquid --- aluminosilicate --- self-focusing --- zeolite --- 3 --- niobium oxyhydroxide catalysts --- kaolin --- pillaring --- surface properties --- lamellar zeolite --- antibiotics adsorption --- diffusion --- TPA --- ?-diimine --- STW zeolite --- ethanol dehydration --- paraffins --- mesoporous silica --- metal organic framework --- epoxidation --- zeolites --- layered zeolite --- liquid outflow --- Z-scan --- heterogenized --- cationic dye adsorption --- 2-ethyl-1 --- third-order nonlinearity --- gas amount --- surfactant --- nickel --- cyclohexene --- zeolite A --- mesopores --- IGC --- cubic structure --- two-dimensional zeolites --- delaminating --- MWW --- copper removal --- MCM-22 --- hierarchical zeolite --- reaction mechanism --- metakaolin --- liquid/nanoporous material system --- degassing pretreatment

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Heterogeneous catalysis played, plays, and will continue to play, a major key role in industrial processes for large-scale synthesis of commodity chemicals of global importance, and in catalytic systems that possess a critical role in energy generation and environmental protection approaches. As a result of the ongoing progress in materials science, nanotechnology, and characterizations, great advances have been achieved in heterogeneous catalysis by nanomaterials. Efficient approaches and advanced methods for the design of nano-structured composite materials (up to atomic level), subject to specific nano-morphologies with enhanced metal–metal and metal–support interactions favorable for catalysis (that enable fine-tuning of the critical properties of the designed catalysts), provide optimized catalysts with outstanding performances in numerous eco-friendly and cost-effective applications. Accordingly, great progress has been achieved involving, for example, emissions control, waste treatment, photocatalytic, bio-refinery, CO2 utilization, and fuel cells applications, as well as hydrocarbon processing for H2, added-value chemicals, and liquid fuels production. The themed Special Issue has succeeded in collecting 10 high-quality contributions that cover recent research progress in the field for a variety of applications (e.g., environment, energy, added-value chemicals/organics synthesis, and bio-transformation) declaring the prospect and importance of nanomaterials in all the directions of heterogeneous catalysis.

n/a --- B-doped --- polyoxymethylene dimethyl ethers --- porous carbon --- self-catalytic pyrolysis --- visible light --- heterostructure --- oxygen vacancies --- TiO2 nanotube --- thiadiazoles --- ethylidenethiosemicarbazides --- adsorption --- dimethoxymethane --- nano-biocatalyst --- heterogeneous catalysis --- bio-catalysis --- H2 evolution --- carbon cuboids --- trioxymethylene --- ?-glucosidase --- metal-organic frameworks --- Brønsted acid sites --- hybrid --- MXene --- oleuropein --- Rhodamine B --- antibiotics --- maleic anhydride --- oxygen evolution reaction --- photocatalyst --- 2-methyl-3-butennitrile --- halide perovskite --- zeolites --- electrospinning --- Rh --- Ti3C2Tx --- heterostructures --- hydroxytyrosol --- metal–organic frameworks --- photocatalysis --- Ni/ZrO2 --- the maximum included sphere --- functionalized olefin --- selective hydrogenation --- thiazoles --- oxidation --- visible-light --- red P --- chitosan-MgO nanocomposite --- ZnO --- g-C3N4/TiO2 --- hydroformylation --- steric constraint