Effect of the Method of Synthesizing a Nickel-Containing Catalyst on Lignin Conversion in Liquid-Phase Hydrodepolymerization
Petroleum Chemistry, ISSN: 1555-6239, Vol: 59, Issue: 1, Page: 111-119
2019
- 6Citations
- 9Captures
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Article Description
Abstract: Results of the catalytic hydrogenation of lignin in a hydrogen-donor solvent medium are described. Nickel-containing systems are deposited directly on the lignin surface in an amount of 1.5–3.4 wt %. Nickel systems are deposited by two methods: from a Ni(OAc) × 4НО aqueous solution and from a colloidal solution in toluene of nickel particles prepared by metal vapor synthesis (MVS). The hydrogen donor solvent is tetralin taken in a tetralin/lignin ratio of 1 : 1. Hydrogenation was carried out in a rotating autoclave at a temperature of 400°C and a pressure of 100 atm. It is shown that the preactivation of nickel-containing lignin by ultrasonication at 39 kHz for 20 min leads to an almost exhaustive conversion of the organic matter: the hydrogenation products comprise 13.1 wt % gas and 86.3 wt % liquid hydrocarbons. The liquid hydrogenation products contain aromatic hydrocarbons and nonvolatile condensed compounds with an average molecular weight of 300 Da. The effect of sonication on nickel-containing lignin and the evolution of nickel-containing components during lignin hydrodepolymerization are studied by electron microscopy and magnetic susceptibility methods.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85064574047&origin=inward; http://dx.doi.org/10.1134/s0965544119010055; http://link.springer.com/10.1134/S0965544119010055; http://link.springer.com/content/pdf/10.1134/S0965544119010055.pdf; http://link.springer.com/article/10.1134/S0965544119010055/fulltext.html; https://dx.doi.org/10.1134/s0965544119010055; https://link.springer.com/article/10.1134/S0965544119010055
Pleiades Publishing Ltd
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