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Preparation method of catalyst for combining pyridine

A catalyst and pyridine technology, applied in the field of catalysis, can solve the problems of short catalyst life and long operation period, and achieve the effects of less equipment investment, no three wastes, and improved life.

Active Publication Date: 2011-05-04
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method has always had the disadvantag

Method used

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  • Preparation method of catalyst for combining pyridine

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Embodiment 1

[0018] Take a certain amount of aluminum sulfate and sodium hydroxide solution to neutralize to obtain alumina hydrate, take a certain amount of lead nitrate, lanthanum nitrate, and cerium nitrate and add it to the alumina hydrate for beating and spray drying, and then calcined in a muffle furnace at 550°C Catalyst A in which lead, lanthanum, and cerium accounted for 2.5%, 0.4%, and 0.4% of alumina were prepared in 6 hours.

Embodiment 2

[0020] Take a certain amount of aluminum sulfate and sodium hydroxide solution to neutralize to obtain alumina hydrate, take a certain amount of potassium nitrate, lead nitrate, lanthanum nitrate, and cerium nitrate and add it to the alumina hydrate for beating and spray drying, and then pass through a muffle furnace Calcined at 550°C for 6 hours to prepare catalyst B in which potassium, lead, lanthanum and cerium accounted for 0.2%, 2.5%, 0.4% and 0.4% of alumina respectively.

Embodiment 3

[0022] Take a certain amount of aluminum sulfate and sodium metaaluminate solution to neutralize to obtain alumina hydrate, take a certain amount of potassium nitrate, lead nitrate, lanthanum nitrate, and cerium nitrate and add it to the alumina hydrate for beating and spray drying, and then pass through muffle Calcined in a furnace at 550°C for 6 hours to prepare catalyst C in which potassium, lead, lanthanum and cerium accounted for 0.2%, 2.5%, 0.4% and 0.4% of alumina respectively.

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Abstract

The invention provides a preparation method of a catalyst for combining pyridine, which is characterized by comprising the following steps: 1, preparing hydrated alumina by adopting aluminium salts, such as aluminum sulfate, sodium metaaluminate and the like and a neutralizer via a sol-gel method; 2, adding nitrate of potash, lead nitrate and nitrate of rare earth and cerium to the hydrated alumina for pulping, wherein potassium, lead, lanthanum and cerium respectively account for 0.1-0.3%, 1-3%, 0.1-0.5%, 0.1-0.5% of alumina; 3, forming the pulp materials by using a spray drying method; and 4, roasting the materials which are subject to the spray drying in a muffle furnace for 4-8 hours at a temperature of 350-650 DEG C.

Description

technical field [0001] The invention relates to the technical field of catalysis, and relates to a method for preparing a catalyst for pyridine synthesis. Background technique [0002] Pyridine is an important organic chemical raw material. As an intermediate, it is widely used in the synthesis of medicine and pesticides. [0003] There are two main sources of pyridine, one is the refining method, and the other is the catalytic synthesis method. Pyridine has been produced mainly by catalytic synthesis since the 1950s due to low yields from extraction methods. However, this method has always had the disadvantages of long operation period and short catalyst life. Contents of the invention [0004] In order to solve the above-mentioned problems, the present invention adopts the following solutions to achieve. [0005] A preparation method of a catalyst for pyridine synthesis, characterized in that: [0006] 1) Aluminum salts such as aluminum sulfate and sodium metaalumina...

Claims

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Application Information

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IPC IPC(8): B01J23/14C07D213/16C07D213/10
Inventor 陈永生于海斌孙春晖刘伟许岩李佳
Owner CHINA NAT OFFSHORE OIL CORP
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