Method for preparing molecular sieve composite oxide catalyst using HZSM5 as carrier and its use

A composite oxide and catalyst technology, applied in molecular sieve catalysts, preparation of organic compounds, preparation of hydroxyl compounds, etc., can solve the problems of complex production process, catalyst competition, low product yield, etc., achieve good selectivity and reduce risk , the effect of high activity

Inactive Publication Date: 2007-08-29
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country is rich in calcium carbide, so it has unique conditions and advantages to use calcium carbide as raw material to produce 1,4-butynediol and 1,4-butanediol. Although the activity can reach the foreign

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] 40.6g Cu(NO 3 ) 2 ·3H 2 O, 5.0g Bi(NO 3 ) 3 ·5H 2 O and 1.0gHNO 3 Make a mixed solution, weigh 20g of HZSM-5 (Si / Al=38) and put it into a beaker, take 37g of the above solution and pour it into the beaker to stir and impregnate for 5 hours. Directly dry the impregnated solution together with the solids in the solution at 120°C, grind, and roast at 480°C for 6 hours to obtain a gray powder, that is, the HZSM-5 catalyst loaded with copper oxide and bismuth oxide, wherein the weight of copper contained is 25%, containing 6% by weight of bismuth. .

example 2

[0019] 35.0g Cu(NO 3 ) 2 ·3H 2 O, 7.0g Bi(NO 3 ) 3 ·5H 2 O and 1.0gHNO 3 Prepare a mixed solution, weigh 15.0g of HZSM-5 (Si / Al=38) and put it into a beaker, take 30.0g of the above solution and pour it into the beaker to stir and impregnate for 8 hours. Directly dry the impregnated solution together with the solids in the solution at 120°C, grind, and roast at 600°C for 5 hours to obtain a gray powder, that is, the HZSM-5 catalyst loaded with copper oxide and bismuth oxide, in which the weight of copper is 23 %, containing 6.5% by weight of bismuth.

example 3

[0021] 55.0g Cu(NO 3 ) 2 ·3H 2 O, 4.0g Bi(NO 3 ) 3 ·3H 2 O and 1.0gHNO 3 Make a mixed solution, weigh 20g of HZSM-5 (Si / Al=38) and put it into a beaker, take 33g of the above solution and pour it into the beaker for stirring and impregnation, and the impregnation time is 6.5 hours. Directly dry the impregnated solution together with the solids in the solution at 120°C, grind, and roast at 550°C for 6 hours to obtain a gray powder, that is, the HZSM-5 catalyst loaded with copper oxide and bismuth oxide, which contains 30% copper by weight. %, containing 5.0% by weight of bismuth.

[0022] Take 5g of the above catalyst and 50mL of formaldehyde solution with a concentration of 36.2% and put it into a reaction kettle connected with a stirring and condensing device, and place it in a constant temperature oil bath. First pass N 2 Squeeze the air in the reactor, then raise the temperature to reduce the catalyst, the temperature rises to 90°C, turn off the N 2 Gas, change int...

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PUM

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Abstract

The invention relates to a method of prepared 1,4-butyne glycol complex oxide catalyst with the HZSM-5 carrier and its application. The features are that: used the deionized water to make Cu(NO3)2.3H2O,Bi(NO3)3.5H2O and HNO3 mix into solution by the weight rate of 40-80:30-60:3-8:1. the prepared solution with high solicon molecular sieve (HZSM-5)1-1.5:2 mixing, string, dipping, through drying, grinding, roasting to get HZSM-5 load catalyst. Put the catalyst and formalin solution into the reaction kettle, the oil temperature up to 80-95degree centigrade, put the acetylene gas into reaction kettle process the ketenes and alkyne reaction of formalin. The invention catalyst of HZSM-5 carrier have better thermal stability, high activity, good selectivity, simple preparation method, can use the high condense formalin solution to react, it is suitable for synthetic 1,4-butyne glycol, reduce the treatment energy loss in the industry.

Description

technical field [0001] The invention relates to a molecular sieve catalyst with HZSM-5 as a carrier, in particular to a preparation method and application thereof applicable to the acetylene synthesis of formaldehyde to synthesize 1,4-butynediol composite oxide catalyst. Background technique [0002] 1,4-butanediol (BDO) prepared by catalytic hydrogenation of 1,4-butynediol (BD) is an important organic synthesis intermediate for the production of γ-butyrolactone (GBL), tetrahydrofuran (THF), polybutylene diphthalate (PBT), etc. Domestic THF needs to import more than 5,000 tons per year, and the main user of THF, polytetramethyl glycol ether (PTMEG), has no domestic manufacturers, and its products rely on imports. my country's demand for BDO will increase substantially, and it has become one of the very scarce chemical raw materials. my country is rich in calcium carbide, so it has unique conditions and advantages to use calcium carbide as raw material to produce 1,4-butyne...

Claims

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Application Information

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IPC IPC(8): B01J29/48B01J29/42C07C33/046C07C29/42
Inventor 林深黄秋锋颜桂炀杨明星
Owner FUJIAN NORMAL UNIV
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