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Mercury-free catalyst for synthesizing vinyl chloride by aid of acetylene processes and method for preparing mercury-free catalyst

A mercury catalyst and catalyst technology, applied in the direction of hydrogen halide addition preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of lack of mercury resources, large pollution, etc., achieve unique chemical properties, improve activity and selectivity sexual effect

Inactive Publication Date: 2018-11-13
NANKAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the activity of mercuric chloride catalyst is high, the pollution is very large, and domestic mercury resources are also severely lacking. At the same time, the international community's policy on mercury is to restrict mining and export, so mercuric chloride catalyst is already facing serious difficulties.

Method used

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  • Mercury-free catalyst for synthesizing vinyl chloride by aid of acetylene processes and method for preparing mercury-free catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Pretreatment of coconut shell charcoal carrier: first, at room temperature, soak 9g of coconut shell charcoal with 20g of hydrochloric acid with a mass percentage of 10% and stir for at least 3 hours, then separate it by suction filtration and filter the cake Washing with deionized water until the pH value of the filtrate is between 5-7, and then drying the filter cake at 120°C to obtain pretreated coconut shell charcoal;

[0030] (2) Preparation of mercury-free catalyst:

[0031] (1) Prepare FeB plating solution

[0032] At room temperature, 0.4 g of KBH 4 and 0.3g of NaOH are simultaneously dissolved in 27g of H 2 O, to obtain solution (a); 2.1g of FeSO 4 •7H 2 O and 0.9g of ethylenediamine were simultaneously dissolved in 27g of H 2 The solution (b) was obtained in O, and after stirring for 10 minutes, the solution (a) was slowly added to the solution (b), and the FeB plating solution was obtained after continuing to stir for 30 minutes;

[0033] (2) Upload...

Embodiment 2

[0038]The preparation steps of embodiment 2 are the same as embodiment 1, only the barium chloride of 0.45g is replaced with the cobalt chloride of 0.45g, and the gained catalyst is recorded as Cat2.

Embodiment 3

[0040] The preparation steps of embodiment 3 are the same as embodiment 1, but the AuCl of 0.005g 3 Replaced with 0.05g of AuCl 3 , The resulting catalyst is denoted as Cat3.

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Abstract

The invention provides a mercury-free catalyst for synthesizing vinyl chloride by the aid of acetylene processes and a method for preparing the mercury-free catalyst. Coconut shell charcoal pretreatedby hydrochloric acid is used as a carrier for the mercury-free catalyst, AuCl3 is used as an active component of the mercury-free catalyst, amorphous alloy FeB or RuB is used as an activator for themercury-free catalyst, and one or a plurality of potassium chloride, barium chloride, copper chloride, ruthenium trichloride, iron trichloride, nickel chloride and cobalt chloride are used as auxiliaries for the mercury-free catalyst. The mercury-free catalyst and the method have the advantage that the mercury-free catalyst is excellent in activity and selectivity when applied to reaction for synthesizing the vinyl chloride by the aid of the acetylene processes.

Description

technical field [0001] The invention proposes a mercury-free catalyst for synthesizing vinyl chloride by acetylene method and a preparation method thereof. The mercury-free catalyst is supported by coconut shell charcoal pretreated with hydrochloric acid, with AuCl 3 As the active component, the amorphous alloy FeB or RuB is used as the activator, and one of potassium chloride, barium chloride, copper chloride, ruthenium trichloride, ferric chloride, nickel chloride, and cobalt chloride One or several kinds of additives. The catalyst shows good activity and selectivity in the application of acetylene method to synthesize vinyl chloride. Background technique [0002] Vinyl chloride is the monomer for the synthesis of polyvinyl chloride, which is one of the five general-purpose resin products and is widely used all over the world. At present, the main process for the production of vinyl chloride in my country is the acetylene method, which is the addition reaction of acetyl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/138B01J27/128B01J27/13C07C17/08C07C21/06
CPCB01J27/138B01J27/128B01J27/13C07C17/08C07C21/06
Inventor 李伟赵永禄关庆鑫王雅玲范东利王伟国宋志刚
Owner NANKAI UNIV