Carbonylation of Dimethyl Ether to Methyl Acetate over SSZ-13
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چکیده
منابع مشابه
Enzymatic bromination of 16-dehydroestradiol 3-methyl ether 17-acetate to 16-alpha-bromoestrone 3-methyl ether.
A recent communication from these laboratories (S. L. Neidleman et al., Tetrahedron Letters 44:5337, 1966) described the bromination and chlorination of the steroidal f3-diketones, 16ketoprogesterone and 16-keto-A-norprogesterone, and the bromination of the steroidal j-ketolactone, 15-keto-1-dehydrotestololactone, by the chloroperoxidase of Caldariomycesfumago (F. S. Brown and L. P. Hager, J. A...
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Due to its excellent conductivity, good thermal stability and large specific surface area, carbon nano-tubes (CNTs) were selected as support to prepare a Re-based catalyst for dimethyl ether (DME) direct oxidation to polyoxymethylene dimethyl ethers (DMMx). The catalyst performance was tested in a continuous flow type fixed-bed reactor. H3PW12O40 (PW12) was used to modify Re/CNTs to improve its...
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THE TITLE COMPOUND (SYSTEMATIC NAME 3,7-dihy-droxy-9-meth-oxy-1-methyl-6H-benzo[c]chromen-6-one dimethyl sulfoxide monosolvate), C15H12O5·C2H6OS, was isolated from an unidentified endophytic fungus (belonging to class Ascomycetes) of Taxus sp. In the crystal, both the alternariol 9-O-methyl ether (AME) and the dimethyl sulfoxide (DMSO) mol-ecules exhibit crystallographic mirror symmetry. One of...
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Steady-state, transient, and isotopic-exchange studies of dimethyl ether (DME) carbonylation, combined with adsorption and desorption studies of probe molecules and infrared (IR) spectroscopy, were used to identify methyl and acetyl groups as surface intermediates within specific elementary steps involved in the synthesis of methyl acetate from DME–CO mixtures with >99% selectivity on H-zeolite...
متن کاملTheoretical Study of Zeolite-Catalyzed Dimethoxymethane Carbonylation to Methyl Methoxyacetate
The gas-phase carbonylation of dimethoxymethane (DMM) to form methyl methoxyacetate (MMAc) can be catalyzed by acid zeolites. This reaction is a critical step in the synthesis of monoethylene glycol (MEG), a widely used chemical, from synthesis gas. The mechanism of DMM carbonylation occurring on H-MFI and H-FAU zeolites has been investigated using density functional theory. We find that the re...
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ژورنال
عنوان ژورنال: ACS Catalysis
سال: 2019
ISSN: 2155-5435,2155-5435
DOI: 10.1021/acscatal.9b04307