Catalyst, reactor using same and method for preparing beta-phenethyl alcohol

Abstract

The invention discloses a catalyst, a reactor using the same and a method for preparing beta-phenethyl alcohol. The catalyst is a polysulfone microporous membrane supported 1, 4-dihydropyridine Hantzsch nicotinamide coenzyme model compound molecule catalyst. The tubular membrane reactor comprises a tubular shell, a reaction cavity, a catalyst clamp and heat transfer grid tubes, the tubular shell is equally divided into a plurality of cavities, the catalyst clamp fixes the catalyst, and the heat transfer grid tubes cling to the catalyst and are mounted on two surfaces of the catalyst. The catalyst can hydrogenate styrene oxide in a high-selectivity and high-yield manner under the condition of room temperature to obtain the beta-phenethyl alcohol. The reactor can timely remove reaction heat,hydrogenation of styrene oxide can be performed without solvents, and desolvent energy consumption and production cost are reduced.

Description

technical field [0001] The invention relates to a film-loaded catalyst, in particular to a polysulfone microporous film-loaded 1,4-dihydropyridine Hantzsch ester nicotinamide coenzyme model compound molecular catalyst, and a reactor for preparing β-phenylethanol using the catalyst and methods. Background technique [0002] β-Phenylethyl alcohol (PEA), also known as 2-phenylethyl alcohol, phenylethyl alcohol, ethyl phenylethyl alcohol, is a simple aromatic primary alcohol, a colorless liquid at room temperature, with an elegant, delicate and long-lasting aroma of roses , was first discovered as a characteristic aroma compound in plant flowers, and naturally exists in aromatic oils such as neroli oil, rose oil, and geranium oil. [0003] β-Phenylethyl alcohol is widely used in various food flavors and tobacco flavors because of its soft, pleasant and long-lasting rose aroma. It is the main raw material for preparing rose-flavored food additives and rose-flavored flavors. β-P...

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Problems solved by technology

The β-phenylethanol preparation processes proposed by patents CN1111169A, US6979753, US4943667, US2524096, etc. all require the use of solvents, which reduces production efficiency, complicates the product separation process, and increases the cost of solvent removal, etc.

[0006] To sum up, the existing technologies all have certain deficiencies to varying degrees. If additives need to be added to improve selectivity, but at the same time cause problems such as reduced catalyst life, difficult product separation, and even affect product quality; such as catalyst structure and Poor performance, which leads to easy deactivation of the catalyst and short catalyst life; if a solvent is required due to the heat transfer limitation of the reactor, the separation cost is increased

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