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Supported carbon material catalyst for preparing C5 and C6 alkane through sugar alcohol selective hydrodeoxygenation and preparation method for catalyst

A hydrodeoxygenation and catalyst technology, which is applied in the preparation of carbon compound catalysts, metal/metal oxide/metal hydroxide catalysts, liquid hydrocarbon mixtures, etc., can solve the problems of poor hydrothermal stability of carrier catalysts, and achieve good industrialization Application prospects, improved selectivity, simple and easy-to-control process

Active Publication Date: 2016-05-25
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a supported carbon material catalyst for preparing C5 and C6 alkanes by selective hydrodeoxygenation of sugar alcohols, which has very good reactivity and stability when used in aqueous phase hydrodeoxygenation of sugar alcohols, and can be used for conversion of sugar alcohols The efficiency is 100%, the selectivity of C5 and C6 alkanes is as high as 80%, and at the same time, it solves the technical problem of poor hydrothermal stability of supported catalysts

Method used

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  • Supported carbon material catalyst for preparing C5 and C6 alkane through sugar alcohol selective hydrodeoxygenation and preparation method for catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A kind of sugar alcohol selective hydrodeoxygenation prepares C5, the preparation method of the supported carbon material catalyst of C6 alkane, comprises the following steps:

[0031] Weigh 5g of activated carbon (70-120 mesh) into the round bottom flask, then slowly add 100mL of phosphoric acid solution (85wt%), 100mL of deionized water and a stirring magnet, then condense the reflux device on the round bottom flask, put it in the oil Heat it in a bath and keep the magnet stirring at 450 rpm, treat it in an oil bath at 90°C for 5 hours, cool to room temperature, filter and wash, wash the filter cake with deionized water for 3 times, put it in a drying oven and dry it overnight at 120°C. Activated carbon support activated by phosphoric acid treatment was obtained.

[0032] Take by weighing 2 grams of phosphoric acid-treated activated carbon supports, impregnate ruthenium trichloride (Ru content 37%, RuCl3. x h 2 (0:0.05g) solution, after ultrasonic treatment for 1h, ...

Embodiment 2

[0036] Same as Example 1, the difference is:

[0037] The mass of ammonium molybdate impregnated in equal volume is 0.08g, and the mass concentration of sorbitol solution is 10%.

Embodiment 3

[0039] Same as Example 1, the difference is:

[0040] The mass concentration of sorbitol solution is 40%.

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Abstract

The invention relates to a supported carbon material catalyst for preparing C5 and C6 alkane through sugar alcohol selective hydrodeoxygenation. One of active carbon, graphene and a carbon nanotube is taken as a catalyst carrier and Ru is taken as active metal; and a first additive or a second additive is added, wherein the first additive is selected from one or two of Mo, Re and W oxides, the second additive is phosphorus, Ru accounts for 1-5wt% of the carrier, and phosphorus accounts for 2-20wt% of the carrier. According to the catalyst, the active carbon, the graphene or the carbon nanotube is taken as the carrier and a metal active center and the additive are introduced by step with an impregnation method after acidification treatment. The catalyst is used for sugar alcohol aqueous phase hydrodeoxygenation and has very good reaction activity and stability; and the sugar alcohol conversion rate is 100% and the C5 and C6 alkane selectivity reaches up to 80%.

Description

technical field [0001] The invention belongs to the field of catalysis and chemical technology, and specifically relates to a supported carbon material catalyst for preparing C5 and C6 alkanes through selective hydrodeoxygenation of sugar alcohols and a preparation method thereof. Background technique [0002] Although fossil resources such as petroleum, coal, and natural gas are still the main sources of liquid fuels, they have obvious resource dependence. The increasingly serious supply situation of fossil resources and the increasingly serious environmental problems force us to look for new resources that can replace or supplement the current energy pattern. At present, biomass resources are considered to be the best choice to replace fossil resources. Carbohydrates, also known as carbohydrates, are naturally synthesized by plants through photosynthesis, and are the most widely distributed and most abundant type of organic matter in nature. Among them are the structural ...

Claims

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Application Information

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IPC IPC(8): B01J23/652B01J27/187B01J27/188B01J27/19C07C1/20C07C9/16C07C13/10C07C13/18C10G3/00
CPCY02P30/20B01J27/19B01J23/6525B01J27/187B01J27/188C07C1/20C07C2523/652C07C2527/187C07C2527/188C07C2527/19C10G3/48C10G3/50C10G2400/02C07C9/16C07C13/10C07C13/18
Inventor 王铁军翁育靖马隆龙仇松柏陈伦刚张琦
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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