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Method of catalyzing sorbitol to synthesize bio-petrol

A technology for catalyzing sorbitol and synthesizing biology, applied in the field of chemical industry, can solve the problems of low octane number and single distribution of liquid alkane, etc., and achieve the effect of increasing the total octane number

Active Publication Date: 2013-01-02
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

[0004] However, it is reported in the literature (George W. Huber, Randy D. Cortright, and James A. Dumesic, Renewable Alkanes by Aqueous-Phase Reforming of Biomass-Derived Oxygenates. Angew. Chem. Int. Ed. 2004, 43, 1549-1551.) The product, the distribution of liquid alkanes is relatively simple, only n-hexane and n-pentane, so the octane number of the product is low

Method used

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  • Method of catalyzing sorbitol to synthesize bio-petrol
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Examples

Experimental program
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Effect test

Embodiment 1

[0024] Catalyst preparation: sieve granular HZSM-5 molecular sieves with 20-100 meshes and a silicon-to-aluminum ratio of 38 as a catalyst carrier, and dry at 100° C. for 10 hours. With 10ml mass percentage concentration is 1% HPtCl 4 The dried molecular sieve sample was impregnated with the aqueous solution for 2 hours and filtered. The filter cake was dried at 120°C for 10 hours, and the dried sample was placed in a muffle furnace, calcined at 550°C for 8 hours, and then reduced in a mixed gas of hydrogen and nitrogen at 550°C for 5 hours to obtain a precious metal content of 1 % of Pt / HZSM-5 catalyst.

[0025] use figure 1 The reaction setup is shown. Mix 1 gram of the reduced catalyst with 100 grams of sorbitol aqueous solution with a concentration of 5% by mass and add them into the slurry bed. After feeding hydrogen, the reaction starts at a reaction pressure of 5.0 MPa. During the reaction, the hydrogen flow rate was always controlled to be 500ml / min, and the tail ...

Embodiment 2

[0029] use figure 1 The reaction device shown is the Pt / HZSM-5 catalyst whose silicon-to-aluminum ratio is 38 in Example 1. Mix 1 gram of the reduced catalyst with 100 grams of sorbitol aqueous solution with a concentration of 5% by mass and add them into the slurry bed. After feeding hydrogen gas, the reaction temperature was fixed at 250° C., and the reaction was started at different reaction pressures. During the reaction, the hydrogen flow rate was always controlled to be 400ml / min, and the tail gas volume was quantified with a wet flow meter. The reaction results are shown in Table 2.

[0030] Table 2 Reaction results of Pt / HZSM-5 under different reaction pressures

[0031]

Embodiment 3

[0033] use figure 1 The reaction device shown is the Pt / HZSM-5 catalyst whose silicon-to-aluminum ratio is 38 in Example 1. The reduced catalyst is mixed with 5% sorbitol aqueous solution and added to the slurry bed. After feeding hydrogen gas, the reaction temperature was fixed at 250° C., and the reaction was started at a reaction pressure of 5.0 MPa. During the reaction, the hydrogen flow rate was always controlled to be 300ml / min, and the tail gas volume was quantified with a wet flow meter. The product distribution and conversion rate at different reaction times were recorded, and the results are shown in Table 3.

[0034] Table 3 Reaction results of Pt / HZSM-5 under different reaction times

[0035]

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Abstract

The present invention provide a method of catalyzing sorbitol to synthesize bio-petrol with higher total octane value. Using sorbitol as raw stuff, employing reaction apparatus with minisize high-pressure slurry bed as core, employing load type Pt as catalyst, active component of the load type Pt catalyst is Pt; vectors are HZSM-5 molecular sieve of 20-200 meshes; capacity of the Pt is 0.5-2.0% mass of the vector; mixing the deacidized catalyst and sorbitol solution and added into the slurry bed of the reaction apparatus; accessing hydrogen gas and starting the reaction. The invention employs the load type catalyst Pt to obtain a more than 80% conversion rate and C<5+>, and content of isoalkane in products is higher, consequently increasing the total octane value of products, and the obtained bio-petrol is more suitable for motor petrol.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a method for catalyzing sorbitol to synthesize biogasoline. technical background [0002] With the depletion of petrochemical resources, human beings will face severe challenges of limited resources. my country is a country with relatively poor oil and gas resources. In recent years, the continuous rise of international oil prices has had an important impact on our economy, and our energy security and national security are also facing considerable pressure. Biomass is the only carbon resource that can be converted into liquid fuel in renewable energy. The development of low-cost biomass preparation of C5 and C6 technologies and the synthesis of high-quality chemicals from waste biomass resources are crucial to the diversification of my country's energy structure. , Enhancing energy security is of great significance. [0003] Aqueous-Phase Reforming (Aqueous-Phase Refor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G3/00B01J29/44
CPCY02P30/20
Inventor 周华王铁军张兴华吴创之马隆龙
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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