Catalyst for preparing C5 and C6 alkane through catalyzing sugar alcohol raw material in water phase and application thereof

A water-phase catalyzed sugar alcohol and catalyzed sugar alcohol technology, which is applied in the field of catalysis, can solve the problems of increasing downstream processing energy consumption, waste acid water pollution, catalyst development and application obstacles, and poor catalyst stability, and achieves good industrial application prospects, good Hydrothermal stability, the effect of simple raw materials

Active Publication Date: 2017-01-04
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a hydrothermal environment, silica-alumina oxides or molecular sieves face problems such as insufficient hydrothermal stability and aluminum loss, resulting in poor catalyst stability, which is a major obstacle to the development and application of catalysts.
On the other hand, the main method of preparing sugar alcohol from biomass raw materials is through acid hydrolysis, and the general downstream treatment needs to be neutralized by alkali, which will increase the energy consumption of the neutralization process of downstream treatment and the water pollution caused by waste acid

Method used

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  • Catalyst for preparing C5 and C6 alkane through catalyzing sugar alcohol raw material in water phase and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The application of the catalyst for preparing C5 and C6 alkanes from water-phase catalyzed sugar alcohol raw materials comprises the following steps:

[0028] (1) Take activated carbon carrier (AC) 10g earlier, then impregnate ruthenium trichloride (metal content 37wt%, RuCl3.H2O) 1.08g in equal volume, then put the sample in ultrasonic treatment for 2 hours and then stand overnight, then Dry in an oven at 110°C for 12 hours, and then bake in a nitrogen muffle furnace at 400°C for 4 hours.

[0029] (2) After the sample is roasted, the ammonium dihydrogen phosphate is impregnated in an equal volume, keeping the molar ratio of Ru and P at 1:1, and the loading of metal Ru at 4wt%. The loaded and impregnated samples were dried in an oven at 110°C.

[0030] (3) Place the catalyst obtained in step (2) in a trickle bed, and at 350° C., reduce the hydrogen in situ for 4 hours; drop the temperature to a reaction temperature of 280° C., and set the pressure of the reaction devic...

Embodiment 2

[0032] The application of the catalyst for preparing C5 and C6 alkanes from water-phase catalyzed sugar alcohol raw materials comprises the following steps:

[0033] (1) Weigh 10g of carbon nanotube carrier (CNT), then impregnate 1.08g of ruthenium trichloride (37wt% metal content, RuCl3.H2O) in an equal volume, then place the sample in ultrasonic treatment for 2 hours and then let it stand overnight , and then dried in an oven at 110°C for 12 hours, and then fired in a nitrogen muffle furnace at 400°C for 4 hours.

[0034] (2) After the sample is roasted, the ammonium dihydrogen phosphate is impregnated in an equal volume. The molar ratio of Ru and P is kept at 1, and the metal Ru loading is at 4 wt%. The loaded and impregnated sample is dried in an oven at 110 °C.

[0035] (3) Place the catalyst obtained in step (2) in a trickle bed, and at 320° C., reduce the hydrogen in situ for 4 hours; lower the temperature to a reaction temperature of 280° C., and set the pressure of th...

Embodiment 3

[0037] The application of the catalyst for preparing C5 and C6 alkanes from water-phase catalyzed sugar alcohol raw materials comprises the following steps:

[0038](1) First weigh zirconia carrier (ZrO2) 10g, then impregnate 1.08g of ruthenium trichloride (37wt% metal content, RuCl3.H2O) in equal volume, then place the sample in ultrasonic treatment for 2 hours and then let stand overnight, It was then dried in an oven at 110°C for 12 hours, and then fired in a nitrogen muffle furnace at 400°C for 4 hours.

[0039] (2) After the sample is roasted, the ammonium dihydrogen phosphate is impregnated in an equal volume, keeping the molar ratio of Ru and P at 1, and the metal Ru loading at 4wt%. The loaded and impregnated samples were dried in an oven at 110°C.

[0040] (3) Place the catalyst obtained in step (2) in a trickle bed, and at 320° C., reduce the hydrogen in situ for 4 hours; lower the temperature to a reaction temperature of 280° C., and set the pressure of the reactio...

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Abstract

The invention discloses a catalyst for preparing C5 and C6 alkane through catalyzing a sugar alcohol raw material in a water phase. The structural formula of the catalyst is a Ru-P/carrier, wherein Ru is a metal component and P is an auxiliary agent; the carrier is one of active carbon, a carbon nanotube, silicon oxide and zirconium oxide; the mol ratio of Ru to P is 0.5 to 5; the loading amount of the metal Ru is 1 weight percent to 5 weight percent; the catalyst has very good catalytic activity and hydrothermal stability; the C5 and C6 alkane is prepared in a continuous reaction kettle at low pressure and low temperature through catalyzing the sugar alcohol raw material in the water phase; the sugar alcohol raw material can be completely converted, and the selectivity of the C5 and C6 alkane is up to 90 percent; the energy consumption is low and a technological process is simple and easy to control; the catalyst has a good industrial application prospect and the problem that an existing biomass-based sugar alcohol water-phase catalysis catalyst is not stable is solved.

Description

[0001] Technical field: [0002] The invention relates to the field of catalysis, in particular to a catalyst for preparing C5 and C6 alkanes from sugar alcohol raw materials in water phase and an application thereof. [0003] Background technique: [0004] At present, fossil resources such as petroleum, coal, and natural gas are still the main sources of liquid fuels, but 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 units of animals and plants, such as cellulose, he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/185C07C1/20C07C9/14
CPCB01J27/1856C07C1/20C07C2527/185C07C9/14
Inventor 王铁军翁育靖马隆龙仇松柏陈伦刚王晨光张琦
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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