Catalyst for preparing alkane by catalytically hydrogenating biological oil

A bio-grease and catalytic hydrogenation technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, molecular sieve catalysts, etc., can solve problems such as polluted products, increased processing costs, and sulfur loss. Achieve the effects of reducing production costs, good catalytic effect, and alleviating the shortage of petrochemical energy

Inactive Publication Date: 2015-06-24
DALIAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this catalyst has good activity, it will lose sulfur during the application process, which requires the use of a large amount of vulcanizing agent in the production process, which not only increases the production cost but also may cause a certain amount of sulfur in the product, polluting the product , which increases the cost of tail gas post-treatment, and may also cause some pollution to the environment, so it is imperative to develop non-sulfurized catalysts

Method used

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  • Catalyst for preparing alkane by catalytically hydrogenating biological oil
  • Catalyst for preparing alkane by catalytically hydrogenating biological oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The preparation of embodiment 1 Ni-Mo / Ce-ZSM-35 catalyst

[0019] Activate ZSM-35 in a muffle furnace at 400°C to 600°C for 2 hours, then add it to a certain concentration of cerium nitrate solution, stir at room temperature at a low speed for a certain period of time, and then wash the molecular sieve with a large amount of deionized water , centrifuge, and bake at 400° C. for 3 hours to 5 hours after being dried to obtain a cerium-modified ZSM-35 carrier. Under the condition of stirring at 20°C-60°C, dissolve the metal salts of nickel and molybdenum in deionized water, and stir thoroughly to obtain a solution, then add the solution to the prepared cerium-modified ZSM-35 catalyst carrier, and stir for 18h-25h , and then dry the obtained mixture in an air atmosphere of 100°C to 120°C, and then bake it in an air atmosphere of 600°C to 800°C for 4h to 6h to obtain a nickel content of 5% to 40% and a molybdenum content of 5%. ~40% catalyst.

Embodiment 2

[0020] Example 2 Ni-Mo / Ba-Al 2 o 3 Catalyst preparation

[0021] Calcining pseudo-boehmite at 600°C for 5h to 10h produces γ-Al 2 o 3 , impregnated with Ba(NO 3 ) 2 After the solution was dried overnight, it was calcined at 1000°C to 1200°C for 5 hours in an air atmosphere, and the content of BaO in the sample was determined by Ba(NO 3 ) 2 Concentration control to prepare BaO-modified γ-Al 2 o 3 Catalyst carrier. Under the condition of stirring at 20°C-60°C, dissolve the metal salts of nickel and molybdenum in deionized water, and stir thoroughly to obtain a solution, then add the solution to the prepared catalyst carrier, stir for 18h-25h, and then put the obtained mixture Drying in an air atmosphere at 100°C-120°C, and then calcining in an air atmosphere at 600°C-800°C for 4h-6h to obtain a catalyst with a nickel content of 10%-50% and a molybdenum content of 10%-30%.

Embodiment 3

[0022] Example 3 Ni-Mo / La-Al 2 o 3 Catalyst preparation

[0023] Al 2 o 3 powder, and then use a certain concentration of La(NO 3 ) 3 After solution impregnation, drying and calcination at 900 °C, lanthanum-modified Al 2 o 3 carrier. Add ammonia water to the salt solution containing nickel and molybdenum at 10°C to 30°C and stir to react, then lanthanum modifies Al 2 o 3 Add the carrier into the solution, adjust the pH value to 10, reflux at 100°C for 3h, filter and dry, and roast at 400°C for 5h to obtain the catalyst.

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Abstract

The invention belongs to the field of novel technology of biological energy, and provides a catalyst for preparing alkane by catalytically hydrogenating biological oil. The catalyst is characterized in that 10 to 50 percent of non-precious metal nickel salt, molybdenum salt, cobalt salt and tungsten salt are adopted as active ingredients, a modified molecular sieve / aluminum oxide is used as a catalyst carrier; the catalyst carrier is loaded with one or two and more than two of 10 to 50 percent of molybdenum, nickel, cobalt and tungsten to obtain a catalyst precursor for hydrogenating and refining the biological oil; the precursor is activated for 2 to 6 hours under the hydrogen atmosphere of 300 to 600 DEG C to obtain the catalyst for preparing the alkane by catalytically hydrogenating biological oil. The non-sulphurized biological oil hydrogenation refined catalyst is used for substituting the metal sulfide catalyst and the precious metal catalyst of the hydrogenation deoxidation reaction, the production cost is reduced, and the crisis of the shortage of the fossil energy can be alleviated.

Description

technical field [0001] The invention belongs to the new technology field of bioenergy, and relates to a catalyst for preparing linear alkanes or branched alkanes by catalyzing the hydrogenation of bio-oils and oils under relatively mild conditions, so as to realize the conversion of bio-oils and their derivatives to fuels and chemicals. transform. Background technique [0002] With the increasingly severe energy and environmental problems, the development of renewable new energy has become a top priority. Due to the characteristics of abundant resource reserves, low cost, renewable, low pollution and sustainable development, bio-oil has attracted widespread attention at home and abroad as a new technology for preparing fuels and fine chemicals. [0003] The characteristics of bio-oil different from petrochemicals bring difficulties to its quality improvement and practical application. Bio-oil upgrading methods at home and abroad mainly include catalytic hydrogenation, cata...

Claims

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Application Information

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IPC IPC(8): B01J29/46B01J23/755B01J23/83C10G3/00
CPCY02P30/20
Inventor 梁长海于爽陈霄徐彬曾志荣
Owner DALIAN UNIV OF TECH
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