Results 31 to 40 of about 37,310 (212)

The Development of Zeolite‐Based Catalysts for CO2 Hydrogenation to Dimethyl Ether

Carbon and Hydrogen, EarlyView.
This review highlights key factors that influence the catalytic performance of zeolites in the direct hydrogenation of CO2 to dimethyl ether (DME). These factors include topology, Si/Al ratio, crystal size, and spatial proximity between the metallic and acidic components. Additionally, we offer insights into the design of optimized catalysts for tandem
Zhongyi Xue, Wenfu Yan
wiley   +1 more source

Oxidative Dehydrogenation of Ethylbenzene over Iron‐Based Catalysts: Challenges, Prospects, and Future Trends

ChemCatChem, EarlyView.
This review discusses different aspects of the oxidative dehydrogenation reaction of ethylbenzene to styrene over iron‐based oxides, emphasizing the properties of the catalysts and the participation of active sites, as well as the deactivation and regeneration processes using soft oxidants.
Johnatan de Oliveira Soares, Felipe Fernandes Barbosa, Tiago Pinheiro Braga   +2 more
wiley   +1 more source

Energy‐Saving Dehydration of Primary Alcohol Under the Formation of Alkenes via a Bifunctional Clay Catalyst

ChemCatChem, EarlyView.
A commercial acid‐leached bentonite is used in the dehydration reaction of alcohols. A yield of 52% in the alkene formation was observed with FULCAT®‐22 F. IR spectroscopy revealed changes in Brønsted and Lewis acid sites with temperature, driving the reaction to different yields.
Margherita Cavallo, Adil Allahverdiyev, Melodj Dosa, Oscar Kelly, Valentina Crocellà, Francesca Bonino, Harald Gröger   +6 more
wiley   +1 more source

Gravitational descendants in symplectic field theory

, 2010
It was pointed out by Y. Eliashberg in his ICM 2006 plenary talk that the rich algebraic formalism of symplectic field theory leads to a natural appearance of quantum and classical integrable systems, at least in the case when the contact manifold is the
Fabert, Oliver
core   +1 more source

CO2 Methanation Of Co/CeO2 Prepared by Wetness Impregnation of Co on Flame‐Synthesized CeO2

ChemCatChem, EarlyView.
Tailoring the interaction between cobalt (Co) species and flame‐synthesized cerium oxide (CeO2) influences selectivity in CO and CO2 hydrogenation. The chemical state of Co in catalysts with varying loadings was analyzed. Correlations between chemical state, particle size, and catalytic performance offer insights for designing more selective and stable
Angelina Evtushkova, Jason M.J.J. Heinrichs, Nikolay Kosinov, Emiel J.M. Hensen   +3 more
wiley   +1 more source

Arkansas Small-Grain Cultivar Performance Tests 2004-2005 [PDF]

, 2005
Small-grain cultivar performance tests are conducted each year in Arkansas by the Arkansas Agricultural Experiment Station, Department of Crop, Soil and Environmental Sciences.
Bacon, R. K., Kelly, J. T., Parsons, C. E.   +2 more
core   +1 more source

Review on CO2 Activation via Catalytic Reverse Water‐Gas Shift Reaction

Chemie Ingenieur Technik, EarlyView.
For turning CO₂ into valuable chemicals, the reverse water‐gas shift (RWGS) reaction offers a promising solution by converting CO₂ and H₂ into CO and H₂O. Thermodynamic challenges, catalytic mechanisms, and an overview of the technological readiness of various RWGS implementation approaches across different scales are presented and discussed.
Rafael Becka, Siegfried Bajohr, Thomas Kolb   +2 more
wiley   +1 more source

Comparison of Abelian categories recollements [PDF]

, 2004
We give a necessary and sufficient condition for a morphism between recollements of abelian categories to be an equivalence.Comment: 16 pages.
Franjou, Vincent, Pirashvili, Teimuraz
core   +3 more sources

Density, viscosity, and stability of products from combinations of visbreaking and deasphalting

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Transporting bitumen through pipelines in Western Canada is cost intensive because the oil has to be diluted with light solvents to meet pipeline specifications. The diluent requirement can be reduced by visbreaking (VIS) and solvent deasphalting (SDA), each of which decrease the viscosity and density of the oil.
Jose Beleno, Florian F. Schoeggl, Darius Remesat, Harvey W. Yarranton   +3 more
wiley   +1 more source

Bioelectrochemical treatment of oil sands process‐affected water: A comparative study

The Canadian Journal of Chemical Engineering, EarlyView.
Comparative Efficiency of microbial fuel cell, microbial electrolysis cell, and microbial electrosynthesis cell systems for oil sands process‐affected water treatment. Abstract In this study, removal of dissolved organic carbon and naphthenic acids (NAs) from oil sands process‐affected water (OSPW) was evaluated in flow‐through microbial fuel cell (MFC)
Louis‐B. Jugnia, Dominic Manno, Jie Sui, Xiaomeng Wang, Boris Tartakovsky   +4 more
wiley   +1 more source