Results 61 to 70 of about 83,093,681 (218)

The Host‐Guest Assemblies of Metal–Organic Frameworks and Protic Ionic Liquids With ZIF‐8 and [Dema][TfO] – Structural Response and Ionic Conductivity

open access: yesSmall, EarlyView.
MOFs can serve as effective proton conductors owing to their porous structures and well‐defined channels. In this study, the protic ionic liquid [Dema][TfO] is introduced into ZIF‐8 cages. The confined [Dema][TfO] can transfer between adjacent ZIF‐8 cages, inducing cage expansion through the swing effect.
Wen Yang   +7 more
wiley   +1 more source

Experimental methods in chemical engineering: Temperature‐programmed oxidation—TPO

open access: yesThe Canadian Journal of Chemical Engineering, Volume 104, Issue 12, Page 6423-6439, December 2026.
Abstract Temperature‐programmed oxidation (TPO) probes the oxidative capacity and redox properties of solid materials—catalysts, metal oxides, perovskites, and carbonaceous deposits. It identifies coke type, distribution, and reactivity. TPO instruments pass an oxidizing gas (diluted O2, air, or less commonly N2O, CO2, or CO) through a micro‐reactor ...
Gholamreza Roohollahi   +7 more
wiley   +1 more source

In-situ preparation of highly dispersed zeolite-based FCC catalysts for hierarchical cracking of macromolecules

open access: yesFuel Processing Technology
Optimizing the dispersion of ZSM-5 zeolite-based cracking active components is essential for enhancing the performance of FCC catalysts in cracking macromolecules.
Fei Wang   +5 more
doaj   +1 more source

Theoretical Investigation of Ethane‐to‐Aromatics Conversion Over [GaH2]‐ZSM‐5

open access: yesJournal of Computational Chemistry, Volume 47, Issue 29, November 5, 2026.
DFT calculations with two ZSM‐5 cluster models describe the complete ethane‐to‐aromatics cycle over [GaH2]+, which shows a lower maximum barrier than Ga+ and avoids the severe regeneration penalty of [GaO]+. Irrespective of cluster size, C6 ring closure, rather than the final dehydrogenation to benzene, is the turnover‐frequency‐determining transition ...
João V. F. Costa   +7 more
wiley   +1 more source

Plastic catalytic degradation study of the role of external catalytic surface, catalytic reusability and temperature effects [PDF]

open access: yes, 2009
Technological advancements over the last century have lead large and continuous growth in the output of plastic materials. This exponential growth has created public concern over the environmental impact caused by the polymeric waste produced. These have
Kpere-Daibo, T.S.
core  

Promoted aromatization and isomerization performance over ZSM-5 zeolite modified by the combined alkali-steam treatment

open access: yes, 2009
The combined alkali-steam treatment was employed to prepare the ZSM-5 zeolite possessing the micro-mesopore hierarchical structure and proper acidity simultaneously.
Liu, Shenglin   +8 more
core   +1 more source

Keggin-type molybdovanadophosphoric acids loaded on ZSM-5 zeolite as a bifunctional catalyst for oxidehydration of glycerol [PDF]

open access: yes
Glycerol is a promising renewable feedstock for the manufacture of C3 derivatives. We investigated the one-pass oxidehydrarion of glycerol through the dehydration of glycerol into acrolein, followed by the oxidation of acrolein.
ツジ, エツシ   +25 more
core   +1 more source

Cu‐ERI Zeolite Catalysts With Tailored Properties for the Removal of N‐Containing Compounds

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 21, 3 November 2026.
The study found that Cu‐ERI zeolites, especially Cu‐ERI_2, show strong low‐temperature NH3‐SCR‐DeNOx activity and high N2 selectivity because they contain highly active, easily reducible Cu2+ species; Cu‐ERI_2 also facilitates NH3 activation and preferentially consumes NH3 adsorbed on Brønsted acid sites during NO reduction.
Magdalena Jabłońska   +7 more
wiley   +1 more source

Bio‐Inspired Coordination‐Engineered Fe Nanozymes on Zeolite Y for Selective Methane‐to‐Methanol Conversion

open access: yesChemCatChem, Volume 18, Issue 21, 12 November 2026.
Engineering the Fe coordination environment using bio‐inspired amino‐acid ligands within a zeolite Y framework promotes selective methane‐to‐methanol conversion under mild reaction conditions. ABSTRACT The direct conversion of methane to methanol remains a long‐standing catalytic challenge due to the inertness of C─H bond and the susceptibility of ...
Harshita Harshita   +3 more
wiley   +1 more source

Air Stability of Sulfide Solid Electrolytes: From Theoretical Insights to Practical Solutions

open access: yesENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 6, November 2026.
This paper reviews research progress on the air stability of SSEs, covering their instability mechanisms and modification strategies, while outlining core challenges and future directions for practical applications. Sulfide solid electrolytes are pivotal for enabling high‐performance all‐solid‐state batteries due to their high ionic conductivity and ...
Hongbing Ding   +10 more
wiley   +1 more source

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