نتایج جستجو برای: organic framework

تعداد نتایج: 656348  

Journal: :Tsinghua Science and Technology 2010

Journal: :Chemistry: A European Journal 2023

Covalent organic framework (COF) particles with hydroxy groups and well-defined micropores have been synthesized used as novel carriers to load a metallocene catalyst—Cp2ZrCl2. The resulting supported catalyst, which had high specific surface area, demonstrated higher catalytic activity, better thermal tolerance, unique nanoconfinment effect during ethylene polymerization, producing polyethylen...

Journal: :Angewandte Chemie 2022

Bismuth metal–organic frameworks (MOFs) as heterogeneous catalysts are scarce, and there is little knowledge on the influence of MOF features their resulting activity behavior. Here, we present synthesis, characterization, catalytic in one-pot multicomponent Strecker reaction with ketones three new MOFs prepared combination indium or bismuth 4,4′,4′′,4′′′-methanetetrayltetrabenzoic acid. One th...

2012
Eladio M. Knipping

awma.org Copyright 2012 Air & Waste Management Association The organic fraction of fine particulate matter (PM2.5) can comprise a large fraction of total concentrations of PM across the United States.1 Typically, organic aerosol (OA) or organic particulate matter (OPM) has been viewed as primary and secondary in nature, referring to material that is directly emitted to the atmosphere or PM that...

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