Results 1 to 10 of about 115,812 (293)
Modificação de zeólitas para uso em catálise Modifying zeolites for use in catalysis
Química Nova, 2001 The use of zeolites and other molecular sieves as catalysts is discussed at an introductory level. The text includes a brief historic background on the use of zeolites in catalysis, and a discussion of some chemical and physical properties of silicalite,
Fernando J. Luna, Ulf Schuchardt
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Surface chemistry of heterobimetallic Ge-M (M = Mo, W) complexes in zeolite Y. [PDF]
, 1991 The intrazeolite chemistry of the two germylene complexes Cl2CTHF)GeM(CO)5 (M = Mo, W) was studied with x-ray absorption spectroscopy (Ge, Mo, W edge EXAFS) and in-situ FTIR/TPD-MS techniques.
Bein, Thomas +2 more
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Wide Field-of-View Imaging With Wavefront Coded Diffractive Photon Sieves
IEEE Photonics Journal, 2016 We report a demonstration of a wide field-of-view (FOV) imaging with a wavefront coded diffractive photon sieves. In conventional diffractive photon sieves (or other diffractive optical elements), clear imaging can only be achieved within near-zero FOV ...
Xiaonan Zhao +4 more
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One-Pot Strategies for Lithium Recovery from Beta-Spodumene and LTA-Type Zeolite Synthesis
CrystalsThis study presents a groundbreaking method for extracting lithium from beta-spodumene while simultaneously achieving the sustainable synthesis of LTA-type zeolite, designated as LPM-15, without relying on organic solvents or calcination.
Leonardo Leandro dos Santos +2 more
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Adsorção de CO2 em peneiras moleculares micro e mesoporosas
Química Nova, 2014 Microporous molecular sieves of type Y, Beta, ZSM-5, ZSM-12 and ZSM-35, and mesoporous molecular sieves of type MCM-41 and MCM-48, and these sieves modified with triethanolamine and ethylenediamine were obtained and characterized by XRD, FTIR, TGA and ...
Thiago G. Oliveira +4 more
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Copper modified carbon molecular sieves for selective oxygen removal [PDF]
, 1992 Carbon molecular sieves modified by the incorporation of finely divided elemental copper useful for the selective sorption of oxygen at elevated temperatures. The carbon molecular sieves can be regenerated by reduction with hydrogen.
Seshan, Panchalam K., Sharma, Pramod K.
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This before That: Causal Precedence in the Biomedical Domain
, 2016 Causal precedence between biochemical interactions is crucial in the biomedical domain, because it transforms collections of individual interactions, e.g., bindings and phosphorylations, into the causal mechanisms needed to inform meaningful search and ...
Bell, Dane +3 more
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Discrete Mathematics, 2020 Cyclic sieving is a well-known phenomenon where certain interesting polynomials, especially $q$-analogues, have useful interpretations related to actions and representations of the cyclic group. We propose a definition of sieving for an arbitrary group $G$ and study it for the dihedral group $I_2(n)$ of order $2n$.
Rao, Sujit, Suk, Joe
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Synthesis MFI Zeolites Using Alternative Silica Source for CO2 Capture
CeramicsIn recent years, climate change has attracted the attention of the scientific community. These changes are attributed to human action, which is responsible for the emission of polluting gases, mainly through the burning of fossil fuels, deforestation ...
Clenildo de Longe +6 more
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Perfluoropolymer/Molecular Sieve Mixed-Matrix Membranes
Membranes, 2019 Despite the outstanding chemical, thermal and transport properties of amorphous and glassy perfluorinated polymers, only few works exist on the preparation and transport properties of perfluoropolymer/molecular sieves mixed-matrix membranes (MMMs ...
Gianni Golemme, Anna Santaniello
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