A High Performance and High Activity Composite Metal Membrane Etherification Catalyst

Abstract

The invention discloses a high-performance and high-activity composite metal film etherification catalyst. The steps are as follows: 1) soak the molecular sieve in phosphotungstic acid for 20 minutes, and then dry it in the air; The final acidic molecular sieve is added to the graphene sol, and dried at 80-200°C for later use; 3) Prepare magnesium carbonate suspension, calcium hydroxide dilute solution, and barium hydroxide dilute solution respectively, and then sequentially add the molecular sieves in step 2) Soak for 5 minutes, then gradually increase the temperature and heat, burn at high temperature for 4-8 hours, and cool naturally to obtain a composite metal film etherification catalyst. The invention has suitable pore structure distribution and active metal dispersion, and has the advantages of simple preparation process, high activity, and no saturation of unsaturated olefins.

Description

technical field [0001] The invention belongs to the technical field of gasoline processing, and in particular relates to a high-performance and high-activity composite metal film etherification catalyst. Background technique [0002] With the rapid development of human society, countries around the world, especially some developed countries, pay more and more attention to the protection of the environment. The rapid development of the automobile industry has caused serious pollution of the atmosphere by automobile exhaust. In order to reduce this pollution, no The demand for lead-containing oxygen and high-octane gasoline is increasing. At present, one of the main ways to increase the octane number of gasoline is to add oxygen-containing compounds with high octane number, such as methyl Tert-butyl ether (MTBE), ethyl tert-butyl ether (ETBE) and methyl tert-amyl ether (TAME), etc., are widely used in countries all over the world because of their high octane number and the adv...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of human society, countries around the world, especially some developed countries, pay more and more attention to the protection of the environment. The rapid development of the automobile industry has caused serious pollution of the atmosphere by automobile exhaust. In order to reduce this pollution, no The demand for lead-containing oxygen and high-octane gasoline is increasing. At present, one of the main ways to increase the octane number of gasoline is to add oxygen-containing compounds with high octane number, such as methyl Tert-butyl ether (MTBE), ethyl tert-butyl ether (ETBE) and methyl tert-amyl ether (TAME), etc., are widely used in countries all over the world because of their high octane number and the advantages of not releasing harmful substances such as CO. In addition, due to the impact of the Clean Air Act in the United States in the 1970s, these ethers have been widely used as gasoline octane enhancers and oxygen-containing substances to modify gasoline. The production of MTBE reached its peak in the 1980s. However, the water solubility of MTBE is relatively high. Its solubility in water is 4.8%, which is 2-3 times that of ETBE TAEE and TAME. This high water solubility has caused pollution to groundwater. Therefore, the use of MTBE has been banned in California, USA on December 31, 2002