Instituto Mexicano Del Petroleo

Javier Esteban Rodriguez Rodriguez

Maria Del Carmen Martinez Guerrero

Federico Jesus Jimenez Cruz

Florentino Rafael Murrieta Guevara

Alicia Del Rayo Jaramillo Jacob

Luis Carlos Castaneda Lopez

Rogelio Hernandez Suarez

Celia Marin Rosas

Jorge Arturo Aburto Anell

Maria Del Rosario Socorro Luna Ramirez

Blanca Lucia Medellin Rivera

Myriam Adela Amezcua Allieri

Leonardo Diaz Garcia

Luis Felipe Ramirez Verduzco

Lucia Medellin Rivera

The present disclosure relates to a process for the hydrodeoxygenation of vegetable oils or animal fats to produce green diesel, which comprises contacting the vegetable oil or animal fat with a Nickel-Molybdenum or Cobalt-Molybdenum catalyst supported on alumina-titania or titania, respectively; in a fixed bed reactor in the presence of hydrogen. The process involves hydrocracking, hydrogenation, decarboxylation, decarbonylation, carried out in a fixed bed reactor at temperature of about 270&#xb0; C. to about 360&#xb0; C., pressure of about 40 kg/cmto about 60 kg/cm, liquid hourly space velocity (LHSV) between about 0.8 hto about 3.0 h, and H/oil ratio of about 2,700 ft/bbl to about 7,000 ft/bbl, that allows to obtain a conversion up to 99% and up to 92.7% yield on green diesel.

Hydrodeoxigenation process of vegetable oils for obtaining green diesel

The present invention relates to the production of biodiesel and alkyl esters by the transesterification of triglyceride esters, with alcohols in heterogeneous phase in the presence of heterogeneous catalysts, with yields higher than 80%, at a temperature from 0 to 300&#xb0; C., residence time from 20 minutes to 20 h, space velocity of 0.1 to 10 h, pressure of 25-100 kg/cm(24.5-98.07 bar), methanol/oil molar ratio of 10 to 40 and catalyst concentration of 0.001 to 20 weight % based on tri-, di- or monoglyceride. The method produces biodiesel and alkyl esters by transesterification of tri-, di- or mono-glycerides, from palm, jatropha, castor, soybean and sunflower oils, wherein the alcohoxyls RO, RO and RO of the glycerides are Cto Cand a C-Calcohol, such as methanol, in an alcohol:oil ratio from 3:1 to 50:1. The transesterification reaction produces biodiesel while avoiding loss of catalyst, contaminating liquid effluents and eliminating undesirable hydrolysis of triglycerides, diglycerides and monoglycerides into free fatty acids and saponification that generate soaps.

Use of heterogeneous acid catalysts based on mixed metal salts to produce biodiesel

The present invention relates to heterogeneous acid catalysts comprising or consisting of mixed metal salts, of lithium and aluminum phosphates and sulfates, and combinations with metallic cations, such as magnesium, titanium, zinc, zirconium and gallium, to provide adequate Lewis acidity; organic or inorganic porosity promoters, such as polysaccharides; and agglomerates, such as clays, kaolin and metal oxides of the type MO, where; M=Al, Mg, Sr, Zr or Ti, and other metals of groups IA, IIA and IVB, x=1 or 2 and y=2 or 3, for the formation of particles. A process is disclosed for obtaining from the catalyst by the hydrolysis of aluminum lithium hydride with water and oxygenated solvent, such as an ether. The catalysts are used in batch reactor and continuous flow systems in reactions that require moderate Lewis acidity, such as refining, petrochemical and general chemistry, including the transesterification of glycerides to produce alkyl esters.

Process for obtaining heterogeneous acid catalysts based on mixed metal salts and use thereof

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Mexico City, Mexico

Javier Esteban Rodriguez Rodriguez