Porous solid material supported ionic liquid-gold catalyst, as well as preparation and application thereof
A technology of ionic liquids and porous solids, applied in the direction of hydrogen halide addition preparation, physical/chemical process catalysts, organic compounds/hydrides/coordination complex catalysts, etc., can solve problems such as high viscosity, poor stability, and environmental pollution , to achieve high catalytic activity and selectivity, good chemical and thermal stability, and high heat transfer efficiency
Active Publication Date: 2015-12-16
ZHEJIANG UNIV OF TECH
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Problems solved by technology
[0007] The object of the invention is to: overcome the easy sublimation deactivation and serious environmental pollution of mercury catalysts used in the synthesis of vinyl chloride by acetylene hydrochlorination, low activity of supported non-precious metal catalysts, poor stability and high cost of loaded gold and other precious metal catalysts, liquid The catalyst system has the disadvantages of serious corrosion of reaction equipment, high viscosity of catalysts such as ionic liquid-loaded gold, and the loss of active components due to stirring. A porous solid material-loaded ionic liquid-gold (IL-Au) catalyst and its preparation method and method are provided. Application in the synthesis of vinyl chloride by acetylene hydrochlorination, the catalyst has high conversion rate of acetylene, high selectivity of vinyl chloride and good stability
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Embodiment 1-14
[0036] Using the equal volume impregnation method, according to the load and its proportion listed in Table 1, the metered chloroauric acid and the ionic liquid or the third metal chloride are dissolved in the concentrated hydrochloric acid solution, and the temperature is raised and stirred until the solids are completely dissolved. After that, add it dropwise until the specific surface area is 1360m 2 / g of activated carbon, and kept stirring until the solution just wetted the activated carbon, then left it at room temperature for 12 hours, and then dried the sample at a temperature of 110°C for 12 hours to obtain an activated carbon-loaded ionic liquid-gold (IL-Au) catalyst No. 3-16.
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The invention provides a porous solid material supported ionic liquid-gold catalyst, as well as preparation and application thereof. The catalyst comprises a porous solid material carrier and a complex which is prepared from an ionic liquid and a metal ionic compound and is loaded on the carrier surface, wherein the metal ionic compound is a gold compound or a combination of a gold compound and a third metal chloride; the gold compound is selected from one of gold chloride, chloroauric acid, ethylenediamine gold chloride, chloro(triphenylphosphite)gold and chloro(triethylphosphine)gold; the third metal is selected from one of Cu, In, Bi, Ba, Sr, Fe, Mn, Zn, Co, Cs, K, Ca, Sn and Ni; and the ionic liquid is an imidazole ionic liquid. The porous solid material supported ionic liquid-gold catalyst has good chemical and thermal stability and high heat transmission efficiency in the reacting atmosphere for synthesizing vinyl chloride by ethyne hydrochlorination, and has the characteristics of high catalytic activity, high selectivity, good stability, low cost and the like.
Description
(1) Technical field [0001] The invention relates to a porous solid material supported ionic liquid-gold (IL-Au) catalyst, a preparation method thereof and an application in the reaction of acetylene hydrochlorination to synthesize vinyl chloride. (2) Background technology [0002] Vinyl chloride is the monomer of polyvinyl chloride, a versatile general-purpose plastic. The mercuric chloride catalyst used in the industrial synthesis of vinyl chloride has the disadvantage that mercuric chloride is volatile and leads to catalyst deactivation, and the high toxicity and biodegradability of mercuric chloride lead to the process of preparing, using and recycling the spent catalyst in the catalyst. , causing serious environmental pollution and endangering human health. Therefore, it is very necessary to invent a high-performance non-mercuric chloride catalyst for the synthesis of vinyl chloride by acetylene hydrochlorination. [0003] Early disclosed non-mercuric chloride catalyst...
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IPC IPC(8): B01J31/02C07C21/06C07C17/08
Inventor 李小年赵佳张桐桐谷山川许江涛
Owner ZHEJIANG UNIV OF TECH
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