Method for catalytic oxidation preparation of lactone from cycloalkane

A catalytic oxidation, naphthenic technology, applied in chemical instruments and methods, molecular sieve catalysts, physical/chemical process catalysts, etc., can solve problems such as difficulty in generating lactones, achieve high effective utilization, good activity stability, process Simplified effect
CN102336734BActive Publication Date: 2013-11-06CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2013-11-06

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Abstract

The invention discloses a method for catalytic oxidation preparation of lactone from cycloalkane, under the condition that the temperature is 0-180 DEG C and the pressure is 0.1-3 MPa, cycloalkane, an oxidant hydrogen peroxide, a solvent and a catalyst are reacted according to a mol ratio of 1:1-20 of cycloalkane to oxidant and a mass ratio of 0-100:1 of solvent to catalyst, the product is separated to obtain lactone, unreacted cycloalkane and intermediate by-product cyclitol and cyclic ketone are circularly used, wherein the catalyst is a composite composed of a zinc-containing compound and titanium silicon molecular sieve, the mass ratio of zinc-containing compound to titanium silicon molecular sieve in the composite is 0.01-10, the ratio of mol ratio of zinc in the zinc-containing compound to the mol ratio of titanium in the titanium silicon molecular sieve is 0.05-50, the mol ratio of silicon to titanium in titanium silicon molecular sieve is 5-250. The method has high catalytic oxidation activity and selectivity, especially has good catalytic activity stability. According to the method, no inhibitor or initiator is required and no special production equipment requirement is provided, the production process is simple which is beneficial to industrial production and application.
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Description

technical field

[0001] The invention relates to a method for preparing lactone by catalyzing the oxidation of cycloalkane, and more particularly relates to a method for preparing lactone by catalytic oxidation of cycloalkane by using the composition of zinc-containing compound and titanium-silicon molecular sieve as a catalyst. Background technique

[0002] Lactone is an important organic synthesis intermediate compound, such as ε-caprolactone, which can generate dimer or polymer polyester when heated, and can be depolymerized by heating under certain conditions. ε-caprolactone is mainly used in the production of polycaprolactone, ε-caprolactam, adhesives, elastomers, etc. Lactone can also be used as a strong solvent, which has good solubility for some insoluble resins, such as polyurethane resin. In addition, lactone is also an important raw material for the production of degradable plastics. Its biocompatibility, non-toxicity, biodegradability and good drug penetration ma...

Claims

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