Results 41 to 50 of about 6,114 (206)

On the Proton Conductivity of Nafion-Faujasite Composite Membranes for Low Temperature Direct Methanol Fuel Cells. [PDF]

, 2011
Although zeolites are introduced to decrease methanol crossover of Nafion membranes for direct methanol fuel cells (DMFCs), little is known about the effect of their intrinsic properties and the interaction with the ionomer.
Désilets, F, Felice, V, Licoccia, S, Mecheri, B, Tavares, AC, Zhang, Z   +5 more
core   +1 more source

Revisiting the synthesis of dimethyl carbonate from methanol and carbon dioxide

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract The process for producing dimethyl carbonate (DMC) from carbon dioxide (CO2) and methanol is explored in this article. It provides an overview of the thermodynamics involved in DMC synthesis, discussing the challenges and potential solutions. The article highlights the reported use of catalysts and dehydrating agents to improve DMC yield and ...
Diego Alexander Santos Araque, Niloofar Mozaffari, Louis Fradette, Serge Kaliaguine   +3 more
wiley   +1 more source

A critical review of porous adsorbents for air separation: From fundamental insights to rational adsorbent design

AIChE Journal, Volume 72, Issue 4, April 2026.
Abstract Air separation via selective adsorption using porous adsorbents offers energy‐efficient alternatives to cryogenic distillation for producing high‐purity O2 and N2. Adsorbent efficacy depends on balancing selectivity, durability, and performance consistency across varying conditions. This comprehensive review critically discusses the design and
Tianqi Wang, Daisong Chen, Tianyi Zhang, Boyu Zhang, Ruiqiang Wang, Zhengdong Liu, Mei Hong, Youssef Belmabkhout, Qinfen Gu, Jin Shang   +9 more
wiley   +1 more source

Study of the Thermal Stability of Faujasite Zeolite Synthesized from Kaolin Waste from the Amazon [PDF]

Materials Research, 2020
The waste from the processing of kaolin in the Amazonian region of Brazil was subjected to a calcination process at 700°C for 2 h to obtain metakaolin, which, together with sodium hydroxide and sodium silicate, formed the reaction mixture.
Paulo Renan dos Santos de Castro, Ana Áurea Barreto Maia, Rômulo Simões Angélica   +2 more
doaj   +1 more source

Green synthesis of nanocrystalline faujasite zeolite

Ultrasonics Sonochemistry, 2018
In this work, the synthesis of 28 and 38 nm Na-Y zeolite nanocrystals is reported. The process was performed via green synthesis without any organic structure directing agents (SDAs), at low temperature and applying ultrasound-assisted aging. The zeolite nanoparticles obtained were characterized by X ray diffraction (XRD), scanning electron microscopy (
Reinoso, Deborath Mariana, Adrover, María Esperanza, Pedernera, Marisa Noemi   +2 more
openaire   +3 more sources

Chemical characterisation of metakaolin and fly ash based geopolymers during exposure to solvents used in carbon capture [PDF]

, 2014
This paper presents an investigation into the chemical resistance of blended alkali activated aluminosilicate materials, specifically under exposure to two solvents used in post-combustion carbon capture, monoethanolamine (MEA) and potassium carbonate ...
Gordon, L.E., Provis, J.L., San Nicolas, R.   +2 more
core   +1 more source

1D and 3D Carbon Nanomaterials Derived from Zeolite‐Based Catalysts: Synthesis and Applications

Small Structures, Volume 7, Issue 3, March 2026.
Zeolites act as catalysts or catalytic templates to synthesize 1D and 3D carbon nanomaterials with uniform structures, enabled by their high surface area and uniform porous frameworks. The resulting carbon nanomaterials possess excellent surface area and electronic conductivity, supporting their use in energy storage, catalysis, electronics, gas ...
Kulika Pithaksinsakul, Peeranat Chaipornchalerm, Sareeya Bureekaew, Chularat Wattanakit   +3 more
wiley   +1 more source

Thermal behaviour of siliceous faujasite: further structural interpretation of negative thermal expansion [PDF]

, 2015
The high-temperature behaviour of siliceous faujasite (Si-Y) was investigated by in situ synchrotron Xray powder diffraction from room temperature up to 1123 K.
Arletti, R., Leardini, L., Quartieri, S., VEZZALINI, Maria Giovanna   +3 more
core   +1 more source

Confined Chemistry in Space: Zeolite‐Supported Fe13 Nanoclusters Modulate CS Reactivity

Small Structures, Volume 7, Issue 3, March 2026.
The study explores how an Fe13 cluster confined in chabazite reshapes the reaction of CS and H2 under astrochemical conditions. Confinement promotes C–S bond cleavage over hydrogenation, directing chemistry toward CH4 and H2S formation. Additional CS enables CS2 and C2 species. Microkinetic analysis identifies protoplanetary environments where zeolites
Gerard Pareras, Albert Rimola
wiley   +1 more source

Sustainable synthesis of a Faujasite-Na/geopolymer composite from kaolin residues for water treatment

Journal of Engineering and Applied Science
This paper presents a novel method for preparing Faujasite-Na/geopolymer composite using kaolin-based aluminum sulfate residue (KASR), along with meta-kaolinite (MK), to remove methylene blue (MB) from wastewater.
Mohamed A. A. Soliman, Fayza S. Hashem, Noura Fathy Abdel Salam, Nabil Abdullah Al-Sagheer   +3 more
doaj   +1 more source