Results 71 to 80 of about 6,415 (208)

Sonocatalytic carbon dioxide reduction for syngas production over surface‐roughened CuxO catalyst

AIChE Journal, EarlyView.
Abstract The transition to a carbon‐circular economy requires efficient technologies for converting CO2 into value‐added chemical feedstocks. Sonocatalytic CO2 conversion has recently emerged as a compelling approach to drive this conversion. Here, we report a surface‐roughened CuxO catalyst for sonocatalytic CO2 reduction in aqueous media, achieving a
Dong Xia, Yi Qin, Hessan Khalid, Yagya N. Regmi, Laurie A. King, James Kwan   +5 more
wiley   +1 more source

P‐Directed and Lewis Acid‐Assisted Pd‐Catalyzed Si─Me Bond Activation Enabling Alkyl Exchange at Silicon

Angewandte Chemie, EarlyView.
A new type of Si─Me bond activation enabling catalytic alkyl exchange at Si was developed. It involves a P‐directing group and Pd─Lewis acid cooperation. It enables the conversion of Me3SiCl into silanols with three different organic substituents. ABSTRACT A novel mode of Si─Me bond activation has been unveiled through the cooperative action of a P ...
Hajime Kameo, Kanta Oishi, Keitaro Yamanaka, Akihiro Mushiake, Hiroyuki Matsuzaka, Didier Bourissou   +5 more
wiley   +2 more sources

Developing slurries for carbon capture: From synthetic gas mixtures to flue gas

AIChE Journal, EarlyView.
Abstract Deep eutectic solvent (DES)‐based systems have recently emerged as promising alternatives to conventional liquid sorbents for CO2 capture due to their tunable properties and potential for enhanced mass transfer. In this work, two DES‐based slurry systems previously developed for CO2 capture, one aqueous and one non‐aqueous, were further ...
Sahar Foorginezhad, Elena Wikberg, Fredrik Weiland, Xiaoyan Ji   +3 more
wiley   +1 more source

Water‐Derived Radical Species Initiate Six‐Electron Oxidation of Cyclic Ketones in Microdroplets

Angewandte Chemie, EarlyView.
Spontaneous six‐electron oxidation of cyclic ketones to yield dicarboxylic acids/keto acids is achieved in ethanol microdroplets containing about 2% water under ambient conditions without any metal salts, acids, or oxidants. Mechanistic studies show that trace amounts of water and molecular oxygen serve as active oxidants in this transformation ...
Muhammad Mujahid Ali, Manish Jana, William LeFever, Robert Graham Cooks   +3 more
wiley   +2 more sources

Earthen construction: structural vulnerabilities and retrofit solutions for seismic actions [PDF]

, 2012
Earthen structures present very appealing characteristics regarding a more sustainable practice with the preservation of our natural resources. However, when subjected to earthquake ground motions, this type of construction may present a deficient ...
Oliveira, C. F., Varum, H., Vargas, J.
core  

How small changes to methylated piperidinium cations impact the synthesis of zeolite SSZ‐39

AIChE Journal, EarlyView.
Abstract Here we report a synthesis study of SSZ‐39 with four different organic structure directing agents (OSDA). The goal was to determine how subtle changes to the OSDA architecture impact crystallization kinetics, material composition, and other properties.
Onyinyechukwu Ukagha, Daniel F. Shantz
wiley   +1 more source

Post‐Synthetic Zinc Modifications to Correct Speciation in Ti‐MWW Zeolites for Catalytic Oxidation

Angewandte Chemie, EarlyView.
Post‐synthetic Zn modifications of Ti‐MWW zeolite catalysts exhibit improved catalytic properties in the selective oxidation reaction, namely the ammoximation reaction. The origin of the beneficial effect of Zn is related via an array of spectroscopic and microscopic techniques to the modification of extra‐framework TiO2 and TiOx clusters and the ...
Christoph J. Kaul, Lukas Lätsch, Alexander V. Yakimov, Milivoj Plodinec, Xing Huang, Trees De Baerdemaeker, Jaroslaw Mormul, Peter Oechsle, Andrei‐Nicolae Parvulescu, J. Henrique Teles, Christophe Copéret   +10 more
wiley   +2 more sources

Oscillations and residual displacements of buildings of varying heights and widths, constructed on elastic-plastic base

MATEC Web of Conferences, 2016
Modern regulations in the field of design and construction of buildings in seismically dangerous areas provide for stability calculation of bases, foundations and underground structures, i.e. calculations for the first group of limited states.
Ter-Martirosyan Zaven, Sobolev Evgeniy, Ter-Martirosyan Armen, Bestuzheva Aleksandra   +3 more
doaj   +1 more source

DESIGN OF DRY BUILDING MIX COMPOSITIONS USING INDUSTRIAL AND CONSTRUCTION WASTE

Modern technology, materials and design in construction
The article presents the results of a comprehensive study on the design of dry building mixture (DBM) compositions using industrial and construction waste. Special attention is given to such types of secondary raw materials as fly ash, blast furnace and steelmaking slags, cement dust, microcalcite, brick debris, concrete rubble, and stone-cutting waste.
Oleksandr Bondar, Oleksandr Khrystych
openaire   +1 more source

Food inflation pass‐through from agricultural imports in a small open economy

American Journal of Agricultural Economics, EarlyView.
Abstract This paper develops a new framework for quantifying cost pass‐through in a small open economy by estimating firm‐level markup responses to agricultural import price shocks. We show theoretically that markup adjustments depend on firms' reliance on imported inputs and demand curvature, generating heterogeneous inflationary effects across firm ...
Minseong Kang, Seungki Lee
wiley   +1 more source