Ding, Guang-Rong published the artcileChemoselective nitrilation of dimethyl adipate with ammonia over carbon encapsulated WOx catalysts under continuous flow conditions, Name: Dimethyl adipate, the publication is Catalysis Science & Technology (2022), 12(12), 3982-3991, database is CAplus.
Adiponitrile (ADN) is a key intermediate for the industrial production of polyamides represented by nylon 66. In this study, the chemoselective nitrilation of di-Me adipate (DMA) with ammonia (NH3) under continuous flow conditions was studied on carbon encapsulated oxygen-deficient WOx<3 catalysts (WOx@C/C). A combination of dispersed anchor sites at a poly(ionic liquid) (PIL) template, the porosity of active carbon support, and the calcination procedure allows the formation of effective WOx@C-600-0.25-A1, persisting high BET sp. surface area and WO2.83 active phase of appropriate size. It delivers ADN and Me 5-cyanopentanoate (MCP) with an excellent selectivity of up to 95.8% at a weight hourly space velocity of DMA (WHSVDMA) of ∼0.64 gDMA gcat-1 h-1 and an NH3/DMA molar ratio of 13 : 1. A tandem reaction route from DMA to ADN via MCP was elucidated, wherein the second nitrilation of MCP to ADN proceeds very slowly. Besides, both CDMA and TONADN/TONMCP are significantly influenced by the phys. dispersion and size of the active WO2.83 phase in WOx@C/C.
Catalysis Science & Technology published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, Name: Dimethyl adipate.
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https://en.wikipedia.org/wiki/Ester,
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