Catalyst for preparing methane by low-temperature oxidization of methane and preparation method and application thereof

Abstract

The invention discloses a catalyst for preparing methane by low-temperature oxidization of methane and a preparation method and application thereof. The catalyst consists of a molecular sieve carrier and an active ingredient supported on the carrier; and the active ingredient comprises copper oxide or copper oxide and noble metal compound active ingredient, wherein the mass ratio of the molecular sieve to the copper in the copper oxide to the noble metal is 100:1-5:0-1. The molecular sieve serves as the carrier, and the preparation method for the catalyst comprises the following steps of: mixing a precursor copper acetate of the basic active ingredient or / and a metal precursor of the noble metal active ingredient in a certain ratio to prepare solution; and soaking the molecular sieve in the solution to allow the metals of the active ingredient to be supported on the carrier, and washing, drying and baking to prepare the catalyst. The catalyst can catalyze the methane oxidation at low temperature to prepare the methanol; a catalytic reaction system is simple; and the yield and selectivity of the target product methanol are high.

Description

technical field

[0001] The invention relates to a catalyst for preparing methanol by low-temperature oxidation of methane, a preparation method and application thereof. Background technique

[0002] The South my country Sea is one of the world's four major oil and gas gathering places, and its natural gas resources are very rich. As the water depth of natural gas fields increases, the offshore distance also increases. This will mean longer natural gas transmission pipelines and longer transportation distances of natural gas hydrate inhibitors (such as methanol), which will lead to a substantial increase in the construction cost of submarine pipelines, and a substantial increase in the transportation cost of hydrate inhibitors. On the other hand, thermodynamic injection agents such as methanol are necessary for the chemical recovery of natural gas hydrates. If they rely on land transportation, the cost of chemical injection agents will increase significantly as the offshore ...

Images