Results 91 to 100 of about 46,055 (292)

Synergistic extraction of critical metals from the oxalic leachate of spent FCC catalyst

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study introduces an improved hydrometallurgy process utilizing a synergistic approach to improve metal recovery from secondary sources of critical metals. It provides a more efficient alternative to traditional single‐extractant methods for separating critical metals from spent refinery catalysts.
Silindile Gumede   +2 more
wiley   +1 more source

Oxime Catalysis by Freezing

open access: yes, 2016
Chemical reaction rates are generally decreased at lower temperatures. Here, we report that an oxime ligation reaction in water at neutral pH is accelerated by freezing. The freezing method and its rate effect on oxime ligation are systematically studied
Stijn M. Agten (1428757)   +2 more
core   +1 more source

Simultaneous Detection of Steroid Esters and Multi‐Class Substances in Dried Blood Spots by LC‐HRMS/MS From a Single Spot for Human Doping Control

open access: yesDrug Testing and Analysis, EarlyView.
A validated LC‐HRMS/MS method enabled, for the first time, the comprehensive detection of steroid esters and multi‐class menu substances from a single dried blood spot. Following extraction, the resulting extract is split into two aliquots, reducing sample consumption and simplifying the analytical workflow.
Panagiotis Sakellariou   +4 more
wiley   +1 more source

Detection of Lower Molecular Mass Peptides, Steroid Esters, and Multi‐Class Substances in a Single Dried Blood Spot for Comprehensive Initial Testing in Doping Control

open access: yesDrug Testing and Analysis, EarlyView.
A validated LC‐HRMS/MS method enabled, for the first time, the simultaneous detection of lower molecular mass peptides, steroid esters, and multi‐class menu substances from a single dried blood spot, maximizing analytical coverage while minimizing sample consumption through post‐extraction splitting into two aliquots.
Panagiotis Sakellariou   +3 more
wiley   +1 more source

Chemical structures of oxime reactivators.

open access: yes, 2013
Chemical structures of oxime reactivators.
Aastha Jain (491658)   +4 more
core   +1 more source

Nonthermal Plasma–Enabled Cascade N2 Activation and Electroreduction

open access: yesEcoEnergy, EarlyView.
Integrating plasma‐assisted NOx synthesis with subsequent electrochemical reduction enables the sustainable synthesis of high‐value N‐containing chemicals under ambient conditions. ABSTRACT The development of sustainable nitrogen fixation technologies operating under ambient conditions is critical for reducing the energy intensity and carbon footprint ...
Shijia Li, Wei Gao, Ziyun Wang
wiley   +1 more source

Ketoximes – Determination of 2-butanone oxime, acetone oxime, 4-methyl-2-pentanone oxime and 2-pentanone oxime in workplace air using gas chromatography (GC-NSD) [PDF]

open access: yes
This analytical method is a validated measurement procedure for the determination of 2-butanone oxime [96-29-7], acetone oxime [127-06-0], 4-methyl-2-pentanone oxime [105-44-2] and 2-pentanone oxime [623-40-5] after personal or stationary sampling ...
Brock, Thomas   +5 more
core   +1 more source

Multidimensional Engineering Enabling Rate‐Matched C−N Coupling for Efficient Organonitrogen Electrosynthesis

open access: yesEcoEnergy, EarlyView.
This review introduces rate matching as a unifying design principle for efficient electrochemical C−N coupling and highlights multidimensional engineering of catalysts, interfaces, and reactors to synchronize the generation of carbon‐ and nitrogen‐containing intermediates, balance their surface coverages, maximize C−N bond formation, and enable ...
Kaixing Cai   +4 more
wiley   +1 more source

4-Ethoxyimino-N′-methoxypyrrolidin-1-ium-3-carboximidamidium dichloride

open access: yesActa Crystallographica Section E, 2009
The title compound, C8H18N4O22+·2Cl−, contains two oxime groups. The methyl oxime group has a Z configuration, and the ethyl oxime group is disordered, with both Z and E configurations in occupancies of 0.840 (8) and 0.160 ...
doaj   +1 more source

Crystal structure of (1Z,2E)-cinnamaldehyde oxime

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
The title compound, C9H9NO, crystallized with two independent molecules (A and B) in the asymmetric unit. The conformation of the two molecules differs slightly with the phenyl ring in molecule A, forming a dihedral angle of 15.38 (12)° with the oxime ...
Bernhard Bugenhagen   +3 more
doaj   +1 more source

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