Abscract: Selective hydrogenolysis of the oxygen-containing bridged (C-O) bonds in aryl ethers is an unsolved synthetic problem important for the coal directional depolymerization and subsequent efficient utilization and for the generation of fuels and chemical feedstocks from biomass. Currently, the cleaving of aromatic C-O bonds requires heterogeneous catalysts at high temperature and hydrogen pressure and lead to a complicated of products from competing hydrogenolysis of C-O bonds and hydrogenation of the arene. Here, we report hydrogenolyses of aromatic C-O bonds in alkyl aryl form specifically arenes and alcohols. This process is catalyzed by a novel magnetic solid super-base catalyst under mild conditions; a novel cubic magnetic core was prepared first of all, and subsequently coats the magnetic core with mesoporous silica, sequentially impregnate the active components Mg2Si onto the mesoporous support. The relative reactivity of ethers model compounds scale as ArCH2-O-Ar &gt; Ar-O-Me &gt;&gt; Ar-O-Ar (Ar, Aryl; Me, Methyl). Hydro-liquefaction of sawdust highlights the potential of the catalyst for the conversion of refractory aryl ether biopolymers to hydrocarbons.

Catalytic hydroliquefaction of sawdust into high-value small-molecular chemicals over a novel magnetic solid superbase catalyst

249th National Meeting (2015)

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