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Sulfur-free nickel-molybdenum bimetallic hydrodeoxygenation catalyst

A deoxygenation catalyst, hydrodeoxygenation technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, catalyst, carbon compound catalyst, etc. Strong carbon ability, inhibition of C=C bond breakage, and structural stability

Active Publication Date: 2020-05-08
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, Ni has a strong methanation ability and hydrocracking ability, and a large amount of hydrogen will be consumed in the reaction process, which reduces the economical efficiency of the production process.

Method used

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  • Sulfur-free nickel-molybdenum bimetallic hydrodeoxygenation catalyst
  • Sulfur-free nickel-molybdenum bimetallic hydrodeoxygenation catalyst
  • Sulfur-free nickel-molybdenum bimetallic hydrodeoxygenation catalyst

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Experimental program
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Effect test

Embodiment 1

[0040] 1. Sulfur-free nickel-molybdenum bimetallic hydrodeoxygenation catalyst Ni-Mo / TiO 2 -SiO 2 preparation of

[0041] Dissolve tetrabutyl titanate (TBOT) and tetraethyl orthosilicate (TEOS) in a certain amount of distilled water at a molar ratio of 1:1, specifically add 2mmol TBOT and 2mmol TEOS and dissolve in 40ml deionized water to form a total molar The mixed solution with a concentration of 0.10 mol / L was stirred and mixed at 40° C. for 6 hours, and then 37 wt % ammonia water was slowly added dropwise to the mixed solution until the pH of the solution was 10, and the dropping rate was controlled at 2 drops / second. The obtained precipitate was milky white. After continuing to stir at the same temperature for 6 hours, the obtained precipitate was suction-filtered, washed with deionized water and absolute ethanol several times until the filter cake was neutral, and placed in a constant temperature drying oven at 100°C. After drying overnight, place it in a box-type muf...

Embodiment 2

[0045] Embodiment 2 operation steps are the same as embodiment 1, but active component Ni and TiO in the catalyst 2 -SiO 2 The mass ratio of the hydrodeoxygenation product n-dodecane is 0.05:1, and the mass yield of hydrodeoxygenation product n-dodecane is 83%, and the product purity mass percentage is 85%.

Embodiment 3

[0046] Embodiment 3 operating steps are the same as embodiment 1, but active component Ni and TiO in the catalyst 2 -SiO 2 The mass ratio of the hydrodeoxygenation product n-dodecane is 0.15:1, and the mass yield of hydrodeoxygenation product n-dodecane is 81%, and the product purity mass percentage is 83%.

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Abstract

The invention discloses a sulfur-free nickel-molybdenum bimetallic catalyst Ni-Mo / TiO2-SiO2 and a method for catalyzing hydrodeoxygenation of fatty acid methyl ester by the sulfur-free nickel-molybdenum bimetallic catalyst Ni-Mo / TiO2-SiO2. The catalyst has the advantages of high catalytic activity, strong carbon deposition resistance, easiness in separation from a liquid product and the like. Whenthe mass ratio of the catalyst to the reaction raw material methyl laurate to the reaction solvent is 0.1: 1: 20, the reaction temperature is 300 DEG C, and the reaction time is 4 hours, the mass yield of the obtained hydrodeoxygenation product n-dodecane product is up to 92%, and the purity mass percent of the product is up to 95%.

Description

technical field [0001] The invention belongs to the field of biomass energy catalysis and relates to a sulfur-free nickel-molybdenum bimetallic catalyst Ni-Mo / TiO 2 -SiO 2 Process for catalytic hydrodeoxygenation of methyl laurate. Background technique [0002] In recent years, triglyceride-based biomass has been widely used to produce biodiesel, and fatty acid methyl ester (FAME) is a typical biodiesel produced by transesterification of triglyceride with methanol. However, due to the large number of oxygen atoms in FAME, it has defects such as high viscosity, high cloud point temperature, and poor thermal stability, so it should be further improved for application. At present, one of the most effective means of upgrading is FAME hydrodeoxygenation, which was the first to use metal sulfide catalysts for upgrading. This traditional catalyst usually uses Mo as an active component, doped with Ni and Co as additives, but a certain sulfurizing agent must be added during the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883B01J21/08C07C1/207C07C9/15C10G3/00
CPCB01J23/883B01J21/08C07C1/2078C10G3/46C07C2523/883B01J35/394C07C9/15Y02P30/20Y02P20/10Y02P20/584
Inventor 刘跃进巴文霞付琳李勇飞胡永春何爽
Owner XIANGTAN UNIV
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