Catalyst applied to decarbonylation of furfural for preparation of furan, and preparation method and application thereof

Abstract

The invention discloses a catalyst applied to decarbonylation of furfural for preparation of furan, and a preparation method and application thereof. The catalyst comprises an Al2O3 carrier, and a main component Pd and an auxiliary active component Ga-Ga2O3 loaded on the carrier, wherein the auxiliary active component Ga is prepared through partial reduction of Ga2O3; the reduction degree of Ga inGa2O3 is 10-70%; the content of Pd accounts for 0.05 to 0.4 wt% of the total weight of the carrier; and the total content of Ga in the auxiliary active component Ga-Ga2O3 accounts for 0.1-5.0 wt% ofthe total weight of the carrier. The catalyst provided by the invention has high activity and stability in gas-phase decarbonylation of furfural for preparation of furan and is slow in inactivation speed and long in operation period.

Description

technical field

[0001] The invention relates to the field of furan preparation, and furthermore, relates to a catalyst for preparing furan by decarbonylation of furfural, a preparation method and application. Background technique

[0002] Furan is one of the important intermediate substances, widely used in many important organic synthesis such as pyrrole, thiophene, tetrahydrofuran and drug synthesis. Furfural is a cheap and easy-to-obtain organic chemical raw material, which is generally produced from crop waste. my country is a large agricultural country with abundant raw materials for furfural production. At present, there are more than 200 furfural production plants with an annual output of nearly 200,000 tons of furfural. The export volume accounts for 1 / 3 of the global trade volume. my country has become the world's major Furfural producing and exporting countries. The yield of furan produced by furfural decarbonylation is relatively high, therefore, the production o...