CN109395753B - Preparation method and application of hydrogenation reaction catalyst - Google Patents
Preparation method and application of hydrogenation reaction catalyst Download PDFInfo
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- CN109395753B CN109395753B CN201811121386.6A CN201811121386A CN109395753B CN 109395753 B CN109395753 B CN 109395753B CN 201811121386 A CN201811121386 A CN 201811121386A CN 109395753 B CN109395753 B CN 109395753B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/14—Phosphorus; Compounds thereof
- B01J27/185—Phosphorus; Compounds thereof with iron group metals or platinum group metals
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/347—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups
- C07C51/36—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups by hydrogenation of carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2603/00—Systems containing at least three condensed rings
- C07C2603/02—Ortho- or ortho- and peri-condensed systems
- C07C2603/04—Ortho- or ortho- and peri-condensed systems containing three rings
- C07C2603/22—Ortho- or ortho- and peri-condensed systems containing three rings containing only six-membered rings
- C07C2603/26—Phenanthrenes; Hydrogenated phenanthrenes
Abstract
The invention discloses a preparation method of a hydrogenation catalyst, belonging to the technical field of chemical catalysis; mixing a graphene oxide dispersion liquid with a nickel chloride solution, adding sodium acetate into the mixed solution, diluting with deionized water, and performing ultrasonic dispersion; after the pH value is adjusted, adding sodium borohydride and sodium hypophosphite solution under the conditions of nitrogen and 70-90 ℃ for reaction, stopping the reaction when no bubbles are generated by continuously stirring, and filtering and drying to obtain the Ni-P/rGO hydrogenation reaction catalyst; the hydrogenation catalyst has the advantages of simple preparation method, low cost and longer service life, and has high abietic acid type resin acid conversion rate and high tetrahydroabietic acid selectivity when being used in the catalytic hydrogenation reaction of rosin.
Description
Technical Field
The invention relates to a preparation method and application of a hydrogenation catalyst, belonging to the field of chemical industry.
Background
Rosin is a natural resin widely existing in nature, and the annual output of rosin in China is at the top of the world. The main component is abietic acid type resin acid. The industrial hydrogenated rosin is generally prepared by hydrogenating rosin and is widely applied to industrial departments of adhesives, synthetic rubbers, coatings, printing ink, paper making, electronics, food and the like.
Graphene is a novel two-dimensional material and has the characteristics of high specific surface area, easiness in dispersion, high mechanical property, thermal stability and the like, the surface of graphene prepared by a chemical method can have some carbon vacancies and oxygen-containing groups which are not reduced, so that the electron migration is not facilitated, but the graphene has unique performance for synthesizing a metal-graphene material in the catalysis field, meanwhile, the graphene composite nanoparticles can weaken the pi-pi effect between graphene sheet layers, so that the graphene sheet layers are not easy to stack, and the nanoparticles and the graphene sheet layers have a synergistic coupling effect, so that the preparation of a catalyst with high dispersibility and good catalytic performance is facilitated.
At present, a rosin hydrogenation catalyst mainly comprises Pd-based and Ni-based catalysts, and the Pd-based catalyst has high catalytic performance when used for rosin hydrogenation, but has the defects of complex preparation process, high manufacturing cost, high hydrogenation reaction process conditions or easy poisoning and the like.
Disclosure of Invention
The invention aims to provide a preparation method of a hydrogenation catalyst, which comprises the following specific steps:
(1) mixing the graphene oxide dispersion liquid with a nickel chloride solution;
(2) according to Na+:Ni2+Adding sodium acetate into the mixed solution obtained in the step (1) at a molar ratio of 1: 3-20, diluting by 10-15 times with deionized water, and performing ultrasonic dispersion for 20 min;
(3) adjusting the pH value of the mixed solution in the step (2) to 9-13 by using a sodium hydroxide solution;
(4) pouring the mixed solution after the pH is adjusted into a three-neck flask, moving the three-neck flask into an oil bath pan, and heating the three-neck flask in the atmosphere of nitrogen;
(5) and heating to 70-90 ℃, adding a sodium borohydride and sodium hypophosphite solution into the three-neck flask, continuously stirring until no bubbles are generated, stopping reaction, filtering and drying to obtain the Ni-P/rGO hydrogenation catalyst.
The mass ratio of the graphene oxide to the nickel chloride is 1: 3-20.
The Ni is NaBH4The molar ratio of (A) to (B) is 20 to 30:1, and the molar ratio of Ni to P is 1:3 to 7.
The concentration of the sodium hypophosphite solution is 1 mol/L.
The invention also aims to apply the Ni-P/rGO hydrogenation catalyst prepared by the method in rosin hydrogenation reaction, and the specific steps are as follows:
(1) weighing rosin, weighing Ni-P/rGO hydrogenation reaction catalyst accounting for 3-10% of the mass of the rosin, adding the Ni-P/rGO hydrogenation reaction catalyst into a reaction kettle, and sealing the reaction kettle;
(2) n is used under 0.1-0.5 MPa2Replacing air in the reaction kettle for 3 times, and then using H2Replacing for 3 times under 0.1-0.5 MPa, and checking the air tightness;
(3) open the valve to fillH2Adjusting the pressure in the reaction kettle to 3-6 MPa, and closing the valve; heating, reacting for 3-7 h at 180-220 ℃ and 600-1000 r/min, and filtering to obtain the hydrogenated rosin.
The method has the advantages that:
(1) the Ni-P/rGO composite catalyst is prepared by adopting a one-step chemical reduction method, the operation is simple, the cost is low, and the prepared catalyst has the structural advantages of good dispersibility, good uniformity and the like.
(2) The Ni-P/rGO composite catalyst prepared by the invention is applied to a rosin hydrogenation system, and has the advantages of high conversion rate, high selectivity of tetrahydroabietic acid, long service life and the like compared with other Ni catalysts in documents.
Detailed Description
The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples.
Example 1: the preparation method and application of the hydrogenation catalyst are as follows:
(1) mixing a graphene oxide dispersion liquid with a nickel chloride solution, wherein the mass ratio of graphene oxide to nickel chloride is 1:3, the concentration of the graphene oxide dispersion liquid is 5g/L, and the concentration of nickel chloride is 1 mol/L;
(2) according to Na+:Ni2+Adding sodium acetate into the mixed solution obtained in the step (1) at a molar ratio of 1:20, diluting by 10 times with deionized water, and performing ultrasonic dispersion for 20 min;
(3) adjusting the pH value of the mixed solution in the step (2) to 9 by using 10mol/L sodium hydroxide solution;
(4) pouring the mixed solution after the pH is adjusted into a three-neck flask, moving the three-neck flask into an oil bath pan, and heating the three-neck flask in the atmosphere of nitrogen;
(5) heating to 90 ℃, adding sodium borohydride serving as an initiator into a three-neck flask, then adding 1mol/L sodium hypophosphite solution, continuously stirring until no bubbles are generated, stopping the reaction, filtering and drying to obtain the Ni-P/rGO hydrogenation reaction catalyst, wherein Ni is NaBH4In a molar ratio of 25:1, the molar ratio of Ni to P is 1: 7;
(6) weighing rosin, weighing Ni-P/rGO hydrogenation catalyst according to 3% of the mass of the rosin, adding the Ni-P/rGO hydrogenation catalyst into a reaction kettle, and sealing the reaction kettle;
(7) with N at 0.1MPa2Replacing air in the reaction kettle for 3 times, and then using H2Replacing 3 times under 0.1MPa, and checking air tightness;
(8) opening a valve to fill H2Adjusting the pressure in the reaction kettle to be 6MPa, and closing the valve; heating to 180 ℃, reacting for 7 hours at the rotating speed of 600r/min, and filtering to obtain filtrate, namely hydrogenated rosin;
the mass analysis result of the reaction product hydrogenated rosin is as follows: the conversion rate was 98.38%; abietic acid 1.36%; 18.25% of tetrahydroabietic acid; 1.55 percent of dehydroabietic acid; acid value 170; softening point (ring and ball method) 76.6 ℃.
(9) The catalyst is washed with absolute ethyl alcohol for three times, vacuum drying is carried out for 2 hours, rosin hydrogenation reaction is continuously carried out, and after 10 times of experiments are repeated, the conversion rate is 96.66%, so that the catalyst is good in stability and long in service life, and the conversion rate is still more than 96% after 10 times of rosin hydrogenation experiments.
Example 2: the preparation method and application of the hydrogenation catalyst are as follows:
(1) mixing a graphene oxide dispersion liquid with a nickel chloride solution, wherein the mass ratio of graphene oxide to nickel chloride is 1:7, the concentration of the graphene oxide dispersion liquid is 5g/L, and the concentration of nickel chloride is 1 mol/L;
(2) according to Na+:Ni2+Adding sodium acetate into the mixed solution obtained in the step (1) according to the molar ratio of 1:17, diluting by 12 times with deionized water, and performing ultrasonic dispersion for 20 min;
(3) adjusting the pH value of the mixed solution in the step (2) to 11 by using 10mol/L sodium hydroxide solution;
(4) pouring the mixed solution after the pH is adjusted into a three-neck flask, moving the three-neck flask into an oil bath pan, and heating the three-neck flask in the atmosphere of nitrogen;
(5) heating to 85 ℃, adding sodium borohydride serving as an initiator into a three-neck flask, then adding 1mol/L sodium hypophosphite solution, continuously stirring until no bubbles are generated, stopping the reaction, filtering and drying to obtain the Ni-P/rGO hydrogenation reaction catalyst, wherein Ni is NaBH4Mole ofThe ratio was 20:1 and the molar ratio of Ni to P was 1: 4.
(6) Weighing rosin, weighing Ni-P/rGO hydrogenation catalyst accounting for 5% of the mass of the rosin, adding the Ni-P/rGO hydrogenation catalyst into a reaction kettle, and sealing the reaction kettle;
(7) with N at 0.2MPa2Replacing air in the reaction kettle for 3 times, and then using H2Replacing 3 times under 0.2MPa, and checking air tightness;
(8) opening a valve to fill H2Adjusting the pressure in the reaction kettle to 5.5MPa, and closing the valve; heating to 190 ℃, reacting for 6h at the rotating speed of 800r/min, and filtering to obtain filtrate, namely hydrogenated rosin;
the mass analysis result of the reaction product hydrogenated rosin is as follows: the conversion rate is 99.32 percent; abietic acid 0.56%; 18.56 percent of tetrahydroabietic acid; 1.45 percent of dehydroabietic acid; an acid value of 166; softening point (ring and ball method) 77.5 ℃.
(9) The catalyst is washed with absolute ethyl alcohol for three times, vacuum drying is carried out for 2 hours, rosin hydrogenation reaction is continuously carried out, and after 10 times of experiments are repeated, the conversion rate is 97.56%, so that the catalyst is good in stability and long in service life, and the conversion rate is still more than 97% after 10 times of rosin hydrogenation experiments.
Example 3: the preparation method and application of the hydrogenation catalyst are as follows:
(1) mixing a graphene oxide dispersion liquid with a nickel chloride solution, wherein the mass ratio of graphene oxide to nickel chloride is 1:11, the concentration of the graphene oxide dispersion liquid is 5g/L, and the concentration of nickel chloride is 1 mol/L;
(2) according to Na+:Ni2+Adding sodium acetate into the mixed solution obtained in the step (1) at a molar ratio of 1:15, diluting by 13 times with deionized water, and performing ultrasonic dispersion for 20 min;
(3) adjusting the pH value of the mixed solution in the step (2) to 12 by using 10mol/L sodium hydroxide solution;
(4) pouring the mixed solution after the pH is adjusted into a three-neck flask, moving the three-neck flask into an oil bath pan, and heating the three-neck flask in the atmosphere of nitrogen;
(5) heating to 80 ℃, adding sodium borohydride serving as an initiator into a three-neck flask, then adding 1mol/L sodium hypophosphite solution, and continuously stirring until no bubbles are generatedStopping the reaction, filtering and drying to prepare the Ni-P/rGO hydrogenation catalyst, wherein Ni is NaBH4Is 30:1, and the molar ratio of Ni to P is 1: 5.
(6) Weighing rosin, weighing Ni-P/rGO hydrogenation catalyst according to 8% of the mass of the rosin, adding the Ni-P/rGO hydrogenation catalyst into a reaction kettle, and sealing the reaction kettle;
(7) using N at 0.3MPa2Replacing air in the reaction kettle for 3 times, and then using H2Replacing 3 times under 0.3MPa, and checking air tightness;
(8) opening a valve to fill H2Adjusting the pressure in the reaction kettle to 4.5MPa, and closing the valve; heating to 200 ℃, reacting for 4h at the rotating speed of 900r/min, and filtering to obtain filtrate, namely hydrogenated rosin;
the mass analysis result of the reaction product hydrogenated rosin is as follows: the conversion rate is 98.35 percent; abietic acid 1.35%; 17.52 percent of tetrahydroabietic acid; 1.87 percent of dehydroabietic acid; acid value 165.5; softening point (ring and ball method) 76.5 ℃.
(9) The catalyst is washed with absolute ethyl alcohol for three times, vacuum drying is carried out for 2 hours, rosin hydrogenation reaction is continuously carried out, and after 10 times of experiments are repeated, the conversion rate is 96.35%, so that the catalyst is good in stability and long in service life, and the conversion rate is still more than 96% after 10 times of rosin hydrogenation experiments.
Example 4: the preparation method and application of the hydrogenation catalyst are as follows:
(1) mixing a graphene oxide dispersion liquid with a nickel chloride solution, wherein the mass ratio of graphene oxide to nickel chloride is 1:15, the concentration of the graphene oxide dispersion liquid is 5g/L, and the concentration of nickel chloride is 1 mol/L;
(2) according to Na+:Ni2+Adding sodium acetate into the mixed solution obtained in the step (1) at a molar ratio of 1:5, diluting by 14 times with deionized water, and performing ultrasonic dispersion for 20 min;
(3) adjusting the pH value of the mixed solution in the step (2) to 13 by using 10mol/L sodium hydroxide solution;
(4) pouring the mixed solution after the pH is adjusted into a three-neck flask, moving the three-neck flask into an oil bath pan, and heating the three-neck flask in the atmosphere of nitrogen;
(5) heating to 75 deg.C, adding boron into three-neck flaskSodium hydride is taken as an initiator, then 1mol/L sodium hypophosphite solution is added, the reaction is stopped when no bubbles are generated after continuous stirring, and the Ni-P/rGO hydrogenation reaction catalyst is prepared by filtering and drying, wherein Ni is NaBH4Is 22:1, and the molar ratio of Ni to P is 1: 6.
(6) Weighing rosin, weighing Ni-P/rGO hydrogenation catalyst according to 9% of the mass of the rosin, adding the Ni-P/rGO hydrogenation catalyst into a reaction kettle, and sealing the reaction kettle;
(7) using N at 0.4MPa2Replacing air in the reaction kettle for 3 times, and then using H2Replacing 3 times under 0.4MPa, and checking air tightness;
(8) opening a valve to fill H2Adjusting the pressure in the reaction kettle to be 4MPa, and closing the valve; heating to 210 ℃, reacting for 3h at the rotating speed of 1000r/min, and filtering to obtain filtrate, namely hydrogenated rosin;
the mass analysis result of the reaction product hydrogenated rosin is as follows: conversion 97.40%; 2.11 percent of abietic acid; 16.18 percent of tetrahydroabietic acid; 1.25 percent of dehydroabietic acid; the acid value is 168.1; softening point (ring and ball method) 75.9 ℃.
(9) The catalyst is washed with absolute ethyl alcohol for three times, vacuum drying is carried out for 2 hours, rosin hydrogenation reaction is continuously carried out, and after 10 times of experiments are repeated, the conversion rate is 96.07 percent, so that the catalyst is good in stability and long in service life, and the conversion rate is still more than 96 percent after 10 times of rosin hydrogenation experiments.
Example 5: the preparation method and application of the hydrogenation catalyst are as follows:
(1) mixing a graphene oxide dispersion liquid with a nickel chloride solution, wherein the mass ratio of graphene oxide to nickel chloride is 1:20, the concentration of the graphene oxide dispersion liquid is 5g/L, and the concentration of nickel chloride is 1 mol/L;
(2) according to Na+:Ni2+Adding sodium acetate into the mixed solution obtained in the step (1) according to the molar ratio of 1:3, diluting by 15 times with deionized water, and performing ultrasonic dispersion for 20 min;
(3) adjusting the pH value of the mixed solution in the step (2) to 9 by using 10mol/L sodium hydroxide solution;
(4) pouring the mixed solution after the pH is adjusted into a three-neck flask, moving the three-neck flask into an oil bath pan, and heating the three-neck flask in the atmosphere of nitrogen;
(5) heating to 70 ℃, adding sodium borohydride serving as an initiator into a three-neck flask, then adding 1mol/L sodium hypophosphite solution, continuously stirring until no bubbles are generated, stopping the reaction, filtering and drying to obtain the Ni-P/rGO hydrogenation reaction catalyst, wherein Ni is NaBH4Has a molar ratio of 26:1 and a molar ratio of Ni to P of 1: 3.
(6) Weighing rosin, weighing Ni-P/rGO hydrogenation catalyst according to 10% of the mass of the rosin, adding the Ni-P/rGO hydrogenation catalyst into a reaction kettle, and sealing the reaction kettle;
(7) with N at 0.5MPa2Replacing air in the reaction kettle for 3 times, and then using H2Replacing 3 times under 0.5MPa, and checking air tightness;
(8) opening a valve to fill H2Adjusting the pressure in the reaction kettle to be 3MPa, and closing the valve; heating to 220 ℃, reacting for 3h at the rotating speed of 700r/min, and filtering to obtain filtrate, namely hydrogenated rosin;
the mass analysis result of the reaction product hydrogenated rosin is as follows: the conversion rate is 96.25%; 3.01 percent of abietic acid; 16.07% of tetrahydroabietic acid; 1.38 percent of dehydroabietic acid; the acid value is 169.2; softening point (ring and ball method) 76.5 ℃;
(9) the catalyst is washed with absolute ethyl alcohol for three times, vacuum drying is carried out for 2 hours, rosin hydrogenation reaction is continuously carried out, and after 10 times of experiments are repeated, the conversion rate is 94.25%, so that the catalyst is good in stability and long in service life, and the conversion rate is still more than 94% after 10 times of rosin hydrogenation experiments.
Claims (3)
1. An application of Ni-P/rGO hydrogenation catalyst in rosin hydrogenation reaction;
the preparation method of the Ni-P/rGO hydrogenation catalyst comprises the following steps:
(1) mixing the graphene oxide dispersion liquid with a nickel chloride solution;
(2) according to Na+:Ni2+Adding sodium acetate into the mixed solution obtained in the step (1) at a molar ratio of 1: 3-20, diluting by 10-15 times with deionized water, and performing ultrasonic dispersion for 20 min;
(3) adjusting the pH value of the mixed solution in the step (2) to 9-13 by using a sodium hydroxide solution;
(4) pouring the mixed solution after the pH is adjusted into a three-neck flask, moving the three-neck flask into an oil bath pan, and heating the three-neck flask in the atmosphere of nitrogen;
(5) and heating to 70-90 ℃, adding a sodium borohydride and sodium hypophosphite solution into the three-neck flask, continuously stirring until no bubbles are generated, stopping reaction, filtering and drying to obtain the Ni-P/rGO hydrogenation catalyst.
2. Use according to claim 1, characterized in that: the mass ratio of the graphene oxide to the nickel chloride is 1: 3-20.
3. Use according to claim 1, characterized in that: ni NaBH4The molar ratio of (A) to (B) is 20 to 30:1, and the molar ratio of Ni to P is 1:3 to 7.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10168021A (en) * | 1996-11-11 | 1998-06-23 | F Hoffmann La Roche Ag | Catalytic hydrogenation |
| CN1200955A (en) * | 1997-06-04 | 1998-12-09 | 中国石油化工总公司 | Catalyst containing Ni-P non-crystalline-state alloy, preparation method and application thereof |
| JP2007090157A (en) * | 2005-09-27 | 2007-04-12 | Furukawa Electric Co Ltd:The | Cathode catalyst for fuel cell and fuel cell using the same |
| CN104001528A (en) * | 2014-05-04 | 2014-08-27 | 昆明理工大学 | Preparation method and application of loaded-type Ni-P/TiO2 amorphous catalyst |
| CN104437572A (en) * | 2014-10-31 | 2015-03-25 | 常州大学 | Preparation method of graphene-loaded nano nickel phosphate hydrogenation catalyst |
| CN108342157A (en) * | 2018-04-13 | 2018-07-31 | 周文辽 | A kind of preparation method of an ultra shallow color rosin resin |
-
2018
- 2018-09-26 CN CN201811121386.6A patent/CN109395753B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10168021A (en) * | 1996-11-11 | 1998-06-23 | F Hoffmann La Roche Ag | Catalytic hydrogenation |
| CN1200955A (en) * | 1997-06-04 | 1998-12-09 | 中国石油化工总公司 | Catalyst containing Ni-P non-crystalline-state alloy, preparation method and application thereof |
| JP2007090157A (en) * | 2005-09-27 | 2007-04-12 | Furukawa Electric Co Ltd:The | Cathode catalyst for fuel cell and fuel cell using the same |
| CN104001528A (en) * | 2014-05-04 | 2014-08-27 | 昆明理工大学 | Preparation method and application of loaded-type Ni-P/TiO2 amorphous catalyst |
| CN104437572A (en) * | 2014-10-31 | 2015-03-25 | 常州大学 | Preparation method of graphene-loaded nano nickel phosphate hydrogenation catalyst |
| CN108342157A (en) * | 2018-04-13 | 2018-07-31 | 周文辽 | A kind of preparation method of an ultra shallow color rosin resin |
Non-Patent Citations (1)
| Title |
|---|
| 非晶态镍硼/石墨烯复合材料的制备及其蒎烯催化加氢活性;张家华等;《化工学报》;20160630;第67卷(第6期);第2364和2369页 * |
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