Instituto Mexicano Del Petroleo

Ana Karina Medina Mendoza

Jose Antonio Toledo Antonio

Jaime Sanchez Valente

Esteban Lopez Salinas

Maria Antonia Cortes Jacome

Carlos Angeles Chavez

Maria De Lourdes Alejandra Guzman Castillo

Isidro Mejia Centeno

Jose Escobar Aguilar

Miguel Perez Luna

Maria De Lourdes Araceli Mosqueira Mondragon

Jorge Alberto Garcia Martinez

The present invention is related to a catalytic process, which includes catalytic compositions for depolymerisation and deoxygenation of lignin contained in the biomass for obtaining aromatic hydrocarbons. The catalytic composition includes at least one non-noble element from Group VIIIB of the periodic table supported on a mesoporous matrix composed of an inorganic oxide, which can be alumina surface-modified with a second inorganic oxide with the object of inhibiting the interaction between the active component and the support. The process of lignin depolymerisation includes dissolving lignin in a mixture of protic liquids, reacting it in a reaction system by batch or in continuous flow at inert and/or reducing atmosphere, at a temperature of between 60 to 320° C. and a pressure of from 5 to 90 kg/cm.

Lignin depolymerization and deoxygenation process for obtaining aromatic compounds and their catalytic reaction composition

The present invention is related to a catalytic process, which includes catalytic compositions for depolymerisation and deoxygenation of lignin contained in the biomass for obtaining aromatic hydrocarbons. The catalytic composition consists of at least one non-noble element from group VIIIB of the periodic table supported on a mesoporous matrix composed of an inorganic oxide, which can be alumina surface-modified with a second inorganic oxide with the object of inhibiting the interaction between the active component and the support. The process of lignin depolymerisation consists of dissolving lignin in a mixture of protic liquids, reacting it|a reaction system by batch or in continuous flow at inert and/or reducing atmosphere, at a temperature of between 60 to 320&#xb0; C. and a pressure of from 5 to 90 kg/cm. When the reaction is developed into a batch system, oxygenated aromatic hydrocarbons are mainly produced, both by thermal as well as catalytic depolymerisation, whereas in a continuous flow reaction system, deoxygenated aromatic hydrocarbons are produced.

Lignin depolymerisation and doxygenation process for obtaining aromatic compounds and their catalytic reaction composition

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Mexico City, Mexico

Ana Karina Medina Mendoza