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A supported catalyst for the preparation of 1,4-butynediol and co-production of propynyl alcohol, its preparation method and application

A supported catalyst and butynediol technology, which is applied in the direction of catalyst activation/preparation, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of small output of propynyl alcohol, agglomeration, unstable carrier magnesium silicate, etc., and achieve The effect of enhancing the activity

Active Publication Date: 2021-08-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of catalyst has the following disadvantages: (1) the carrier magnesium silicate is unstable, it will dissolve in the reaction system, and the service life is short; (2) the amount of catalyst is large, the content of metal copper oxide is high, and it is easy to agglomerate and cannot be fully utilized. The catalytic effect of each active center causes waste of copper resources
[0008] In summary, the supported catalysts for producing 1,4-butynediol in the prior art generally have low activity, especially the activity stability of long-term operation needs to be further improved, and the production of 1,4-butynediol The yield of co-produced propynyl alcohol is very small and insufficient

Method used

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  • A supported catalyst for the preparation of 1,4-butynediol and co-production of propynyl alcohol, its preparation method and application
  • A supported catalyst for the preparation of 1,4-butynediol and co-production of propynyl alcohol, its preparation method and application
  • A supported catalyst for the preparation of 1,4-butynediol and co-production of propynyl alcohol, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Weigh 431g of SBA-15 dry rubber powder, put it into a roasting furnace, raise the temperature to 700°C, and roast for 5 hours.

[0023] (2) Measure 68.9g of magnesium nitrate, add 700mL of deionized water, add 683g of copper nitrate, 58.3g of bismuth nitrate, 52.9g of nitric acid and 28g of C 8 f 17 , and the temperature was raised to 50°C, and stirred to dissolve.

[0024] (3) Put the calcined SBA-15 into the aqueous solution containing copper, bismuth and magnesium, and impregnate once or more times.

[0025] (4) Filter the impregnated SBA-15 and put it into an oven for drying at 120°C for 3 hours.

[0026] (5) Put it in a roasting furnace, raise the temperature to 400 °C at a rate of 70 °C / h, and roast for 4 hours. A copper-bismuth-magnesium supported catalyst is prepared. The sample number is A, and the sample composition is: CuO:37.8%, Bi 2 o 3 : 4.7%, MgO: 1.8%. The particle size distribution of the catalyst is shown in Table 1, and the evaluation results...

Embodiment 2

[0028] (1) Weigh 458g of SBA-15 dry rubber powder, put it into a roasting furnace, raise the temperature to 750°C, and roast for 4 hours.

[0029] (2) Measure 74.5g of magnesium nitrate, add 800mL of deionized water, add 802g of copper nitrate, 64.8g of bismuth nitrate, 53.9g of nitric acid and 40g of C 8 f 17 , and the temperature was raised to 50°C, and stirred to dissolve.

[0030] (3) Put the calcined SBA-15 into the aqueous solution containing copper, bismuth, magnesium and surfactant, and impregnate it one or more times.

[0031] (4) Filter the impregnated SBA-15 and put it into an oven for drying at 120°C for 3 hours.

[0032] (5) Put it in a roasting furnace, raise the temperature to 450 °C at a rate of 70 °C / h, and roast for 4 hours. A copper-bismuth-magnesium supported catalyst is prepared. The sample number is B, and the sample composition is: CuO:34.5%, Bi 2 o 3 : 4.0%, MgO : 1.5%. The particle size distribution of the catalyst is shown in Table 1, and the e...

Embodiment 3

[0034] (1) Weigh 512g of SBA-15 dry rubber powder, put it into a roasting furnace, raise the temperature to 780°C, and roast for 3 hours.

[0035] (2) Measure 75.8g of magnesium nitrate, add 800mL of deionized water, add 748g of copper nitrate, 72.3g of bismuth nitrate, 52.9g of nitric acid and 48g of C 8 f 17 , and the temperature was raised to 50°C, and stirred to dissolve.

[0036] (3) Put the calcined SBA-15 into the aqueous solution containing copper, bismuth and magnesium, and impregnate once or more times.

[0037] (4) Filter the impregnated SBA-15 and put it into an oven for drying at 120°C for 3 hours.

[0038] (5) Put it in a roasting furnace, raise the temperature to 450 °C at a rate of 70 °C / h, and roast for 4 hours. A copper-bismuth-magnesium supported catalyst is prepared. The sample number is C, and the sample composition is: CuO:34.0%, Bi 2 o 3 : 4.7%, MgO: 1.6%. The particle size distribution of the catalyst is shown in Table 1, and the evaluation resul...

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Abstract

The invention discloses a supported catalyst for preparing 1,4-butynediol for co-production of propynyl alcohol and its preparation method and application. Based on the weight content of the final catalyst, the carrier content is 40 wt% to 70 wt%, copper bismuth The content of the magnesium composite oxide is that the copper-bismuth-magnesium composite oxide is loaded on a carrier, and the carrier is SBA-15 molecular sieve, aluminum oxide, titanium oxide, molecular sieve, magnesium oxide, zirconium oxide, and silicon-containing alumina. at least one. In the preparation method of the catalyst, a solution containing magnesium, copper and bismuth is used to impregnate the carrier, and after the impregnation, the final catalyst is obtained by drying and roasting. The catalyst has the advantages of high activity, good stability in long-term operation, high yield of propynyl alcohol and the like, and the preparation method is simple.

Description

technical field [0001] The invention relates to a supported catalyst for preparing 1,4-butynediol for co-production of propynyl alcohol and its preparation method and application, in particular to a method for preparing 1,4-butynediol by acetylation of formaldehyde A supported catalyst for the coproduction of propynyl alcohol, its preparation method and application. Background technique [0002] The industrial production of 1,4-butynediol is mainly the alkyne aldehyde method (Reppe method). Domestic production companies such as Shanxi Sanwei, Sichuan Tianhua, Xinjiang Meike Chemical, Guodian Sinopec Ningxia Energy Chemical, Xinjiang Tianye, Inner Mongolia Yidong and Sichuan Wei Ni Wheel Factory all adopt this technology. In the 1970s, an improved Reppe process was developed, using slurry bed or suspended bed technology, and the reaction was carried out under normal or low pressure conditions. However, the improved Reppe process has higher requirements on the catalyst and p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/035B01J35/02B01J37/02C07C29/42C07C33/046C07C33/042B01J35/00
Inventor 张艳侠段日包洪洲付秋红王领民霍稳周张宝国
Owner CHINA PETROLEUM & CHEM CORP