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Process for the oxidative coupling of methane

A technology of oxidative coupling and methane, applied in chemical instruments and methods, catalysts, organic chemistry, etc., can solve problems such as reducing the production cost of ethylene

Inactive Publication Date: 2012-05-23
FINA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, production of ethylene from methane may reduce the cost of ethylene production compared to some traditional routes

Method used

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  • Process for the oxidative coupling of methane
  • Process for the oxidative coupling of methane

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Experimental program
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Effect test

Embodiment B

[0045] Oxidation catalysts comprising an oxide substrate (MgO) promoted with Sr and La were prepared. A Sr / La / MgO catalyst was used for the oxidative coupling of methane. The catalyst contained 5% by weight Sr [from strontium nitrate (3.62 g)] and 5% by weight La [from lanthanum oxide (3.51 g)]. 3 ) 2 Salt, La 2 o 3 (Sigma-Aldrich, 98.0%) and MgO (22.85 g) (Fisher, 99%) were prepared in aqueous solution. The resulting mixture was dried at 120°C for 3 hours and then calcined in air at 850°C for 1 hour. The catalyst was ground and sieved to a size of 20-40 mesh, 0.855 g of the catalyst was loaded into a quartz reactor, and the catalyst bed was fixed with a quartz tampon and quartz debris. As a form of catalyst pretreatment, the reactor was heated to 850° C. in air at 100 ml / min for 2 hours. The reactor was then cooled to 600 °C in helium in preparation for the OCM experiment.

[0046] Five OCM experiments were carried out with the catalyst Sr / La / MgO. The five trials corr...

Embodiment C

[0052] Oxidation catalysts containing MgO substrates and promoted with Na, Cs and Re were prepared. Na / Cs / Re / MgO catalysts were used for the oxidative coupling of methane. The catalyst contained 5% by weight Na (3.811 grams of sodium chloride), 5% by weight of Cs (2.199 grams of cesium nitrate), and 0.01% by weight of Re (0.5856 grams of rhenium chloride) and MgO (23.4033 grams) (Fischer Seoul company, 99%), prepared in aqueous solution by incipient wetness impregnation. The resulting mixture was dried at 120°C for 3 hours and then calcined in air at 850°C for 1 hour. The catalyst was ground and sieved to a 20-40 mesh size (420-841 microns), 0.597 g of the catalyst was loaded into a quartz reactor, and the catalyst bed was fixed with quartz wool plugs and quartz chips. To pretreat the catalyst, the reactor was heated to 850°C for 2 hours in 100 ml / min of air. The reactor was then cooled to 600 °C in helium in preparation for OCM and OMT experiments.

[0053] Four OCM exper...

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Abstract

A method for the oxidative coupling of hydrocarbons, such as the oxidative coupling of methane, includes providing an oxidative catalyst inside a reactor, and carrying out the oxidative coupling reaction under a set of reaction conditions. The oxidative catalyst includes (A) at least one element selected from the group consisting of the Lanthanoid group, Mg, Ca, and the elements of Group 4 of the periodic table (Ti, Zr, and Hf); (B) at least one element selected from the group consisting of the Group 1 elements of Li, Na, K, Rb, Cs, and the elements of Group 3 (including La and Ac) and Groups 5 - 15 of the periodic table; (C) at least one element selected from the group consisting of the Group 1 elements of Li, Na, K, Rb, Cs, and the elements Ca, Sr, and Ba; and (D) oxygen.

Description

[0001] Cross References to Related Applications [0002] This invention is related to the following two co-pending applications: "Catalyst for the Oxidative Coupling of Hydrocarbons" and "Method for the Oxidative Coupling of Hydrocarbons," both of which were filed by Fina Technology, Inc. and This application was filed on the same day. technical field [0003] The present invention generally relates to the oxidative coupling of methane. Background technique [0004] Methane is the main component of natural gas. While natural gas can be used as a fuel, natural gas sources are far away and transporting methane is often uneconomical. One way to transport natural gas is to liquefy it. However, methane has a low boiling point, making liquefaction difficult and expensive. Research has been carried out to find new, economical ways to harness this energy. [0005] One possible solution is to convert methane into higher hydrocarbons such as ethane or ethylene. Ethylene and highe...

Claims

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Application Information

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IPC IPC(8): C07C2/00
CPCB01J23/10C07C2523/36C07C2523/02C07C2/84B01J21/10B01J23/36B01J23/02C07C2521/10C07C2523/10Y10S585/906Y02P20/52C07C9/06C07C11/04B01J6/00B01J23/04C07C2/00
Inventor S·钦塔J·托尔曼J·R·巴特勒J·亨特T·里维斯
Owner FINA TECH
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