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Preparation method for hydrogenated bisphenol A and catalyst for hydrogenation of bisphenol A

A technology for hydrogenating bisphenol and catalyst, which is applied in hydrogenation preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc. The high cost of hydrogenation catalysts, the inability to take into account the selectivity and purity of conversion products, etc., achieve the effects of good catalytic effect, low cost, low toxicity and pollution

Active Publication Date: 2016-11-09
JIANGSU QINGQUAN CHEM CO LTD
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Problems solved by technology

[0007] The cost of the bisphenol A hydrogenation catalyst provided in the above method is too high, or the conversion rate of the raw material and the selectivity and purity of the product cannot be taken into account when the catalyst catalyzes the hydrogenation of bisphenol A
In addition, in the prior art, the hydrogenated bisphenol A obtained after catalytic hydrogenation is only simply concentrated in vacuum, or cleaned and purified with aromatic hydrocarbons, resulting in limited purity of hydrogenated bisphenol A or in the purification step. Product loss is too high

Method used

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  • Preparation method for hydrogenated bisphenol A and catalyst for hydrogenation of bisphenol A

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preparation example Construction

[0023] Catalyst preparation

[0024] Preparation of the carrier: the TiO 2 Add a certain proportion of 0.3mol / L cadmium salt solution to the nano powder, adjust the pH value of the solution to 10 with 0.3mol / L sodium hydroxide solution, and dry naturally to obtain TiO 2 -CdO composite carrier. Among them, CdO and TiO 2 The molar ratios are 1:1, 1:2 and 1:3, respectively.

Embodiment A1

[0025] Embodiment A1: a certain amount of carrier (CdO and TiO 2 The molar ratio is 1:2) impregnated in the mixed solution of 0.5mol / L ruthenium nitrate, zinc nitrate, nickel nitrate (the molar ratio of ruthenium nitrate, zinc nitrate, nickel nitrate is 1:0.05:0.001), ultrasonic 0.5h, dipping 24h, dried under infrared lamp, and then calcined in a muffle furnace at 500°C for 2h to obtain Catalyst 1.

Embodiment A2

[0026] Embodiment A2: a certain amount of carrier (CdO and TiO 2 The molar ratio is 1:2) impregnated in a mixed solution of 0.5mol / L ruthenium nitrate, zinc nitrate, and nickel nitrate (the molar ratio of ruthenium nitrate, zinc nitrate, and nickel nitrate is 1:0.1:0.001), ultrasonic 0.5h, dipping 24h, dried under infrared lamp, and then calcined in a muffle furnace at 500°C for 2h to obtain Catalyst 2.

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Abstract

The invention provides a preparation method for hydrogenated bisphenol A and a catalyst for hydrogenation of bisphenol A. The preparation method comprises hydrogenating bisphenol A at a temperature of 50-100 DEG C, under a hydrogen pressure of 5-10 MPa and at presence of a solvent isopropanol and a ruthenium catalyst, so as to generate hydrogenated bisphenol A, wherein the ruthenium catalyst is a Ru-Zn-Ni / TiO2-CdO catalyst, that is, the ruthenium catalyst takes zinc and nickel as auxiliary active compositions and takes titanium dioxide and cadmium oxide as a composite carrier. The conversion rate of bisphenol A can reach 100%, meanwhile the selectivity of hydrogenated bisphenol A is larger than 97%, and the purity of hydrogenated bisphenol A is 99.5% or more.

Description

technical field [0001] The invention relates to the field of hydrogenation of organic matter, in particular to a method for preparing hydrogenated bisphenol A and a catalyst for hydrogenation of bisphenol A. Background technique [0002] Hydrogenated bisphenol A (HBPA), the chemical name is 2,2-bis(4-hydroxycyclohexyl)propane, its structural formula is as shown in formula (2), it is the bisphenol A molecule of the structure shown in formula (1) A saturated alicyclic diol obtained by hydrogenation of two benzene rings. Compared with bisphenol A, hydrogenated bisphenol A has higher thermal stability, chemical stability and weather resistance, is more suitable for outdoor projects, and is more beneficial to human health. At present, this product is mainly used in the manufacture of polycarbonate, epoxy resin, polyacrylic resin, etc., and can also be used in the production of fine chemical products such as rubber antioxidants, plasticizers, flame retardants, antioxidants, and c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C35/21C07C29/20B01J23/89
CPCB01J23/002B01J23/8953C07C29/20C07C35/21
Inventor 陶永峰刘千河李子剑徐钰杜程王杰卢满意
Owner JIANGSU QINGQUAN CHEM CO LTD
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