CN107652154B - Method for preparing cis-pinane by catalyzing alpha-pinene hydrogenation by sodium niobate supported ruthenium catalyst - Google Patents
Method for preparing cis-pinane by catalyzing alpha-pinene hydrogenation by sodium niobate supported ruthenium catalyst Download PDFInfo
- Publication number
- CN107652154B CN107652154B CN201710867024.0A CN201710867024A CN107652154B CN 107652154 B CN107652154 B CN 107652154B CN 201710867024 A CN201710867024 A CN 201710867024A CN 107652154 B CN107652154 B CN 107652154B
- Authority
- CN
- China
- Prior art keywords
- nanbo
- pinene
- catalyst
- reaction
- reaction kettle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
- C07C5/02—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation
- C07C5/03—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation of non-aromatic carbon-to-carbon double bonds
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/648—Vanadium, niobium or tantalum or polonium
- B01J23/6484—Niobium
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/16—Reducing
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals
- C07C2523/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals of the platinum group metals
- C07C2523/46—Ruthenium, rhodium, osmium or iridium
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals
- C07C2523/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals combined with metals, oxides or hydroxides provided for in groups C07C2523/02 - C07C2523/36
- C07C2523/56—Platinum group metals
- C07C2523/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tatalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- C07C2523/648—Vanadium, niobium or tantalum
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a method for preparing cis-pinane by α -pinene hydrogenation under the catalysis of a sodium niobate supported ruthenium catalyst, wherein the catalyst is Ru/NaNbO3Wherein Ru is NaNbO3The mass ratio of Ru to NaNbO is 5-10:1003The mass ratio of the composite catalyst to α -pinene is 0.1-1: 100, the composite catalyst and the α -pinene are mixed, the reaction temperature is 120-140 ℃, the hydrogen pressure is 3-4MPa, and the reaction time is 6-10 h to prepare the cis-pinane3The composite catalyst belongs to a heterogeneous catalyst, has simple preparation process and easy recovery, can efficiently catalyze α -pinene to synthesize cis-pinane by hydrogenation at low temperature, has high conversion rate and high selectivity, and is superior to similar heterogeneous catalysts.
Description
Technical Field
The invention relates to a method for preparing cis-pinane by α -pinene hydrogenation under the catalysis of a sodium niobate supported ruthenium catalyst, in particular to a method for preparing cis-pinane by perovskite sodium niobate (NaNbO)3) A novel method for preparing cis-pinane with high selectivity by catalyzing α -pinene hydrogenation by using a composite material loaded with ruthenium metal nano-particles as a catalyst belongs to the field of preparation and application of catalysts.
Background
The main component alpha-pinene of turpentine can be prepared into cis-pinane and trans-pinane through selective hydrogenation catalysis. The cis-pinane is used as an important chemical intermediate, and can be further processed to synthesize fine chemicals such as vitamin A (E), essence and spice, paint, cosmetics and the like. Trans-pinane has larger steric hindrance in structure, and when the content is higher, the problems of more catalytic hydrogenation byproducts, difficult purification of products and the like can be caused, so that the quality of related chemical products is reduced. China has rich turpentine reserves and is one of the main production areas of alpha-pinene. However, due to the restriction of processing technology, the quality and yield of products related to the catalytic hydrogenation of alpha-pinene have a great gap with developed countries, and the sale is mainly based on the export of raw materials. Therefore, the method has important significance for the research of preparing high-purity cis-pinane by the selective catalytic hydrogenation of alpha-pinene.
At present, Pd/C and Raney-Ni catalysts which are commonly used in the industrial alpha-pinene catalytic hydrogenation under the solvent-free condition have poor selectivity to cis-pinane, the reaction conditions are harsh, and in addition, the catalysts are difficult to be repeatedly used (CN 1191857A; CN 1262263A). For many years chemists have been working on the development of high cis-selective catalytic systems (CN 106582803A; CN 106316747A; CN 104003831A; CN 105330505; US 4018842). The catalyst is high in activity, good in selectivity and mild in reaction conditions, but the preparation process is complex and expensive, and the catalyst is difficult to separate and recover. The composite catalyst composed of the noble metal and the semiconductor metal oxide can reduce the use amount of the noble metal and save the cost. And due to the interaction between the two, the catalyst often shows more excellent physicochemical properties such as light and electricity compared with a single-component catalyst, and is expected to be a high-efficiency hydrogenation catalyst (chem.eng.j.,2017,322,234; US 4310714).
Disclosure of Invention
The invention aims to solve the problems of complex preparation process, higher cost, lower selectivity, difficult recovery and reutilization and the like of the noble metal and the noble metal composite catalyst used in the conventional α -pinene selective hydrogenation reaction, and provides the perovskite sodium niobate (NaNbO) which has simple preparation process, lower cost and easy recovery and reutilization3) The method for preparing cis-pinane by α -pinene hydrogenation under the catalysis of the catalyst loaded with ruthenium metal nano particles obtains the performance of α -pinene high-selectivity catalytic hydrogenation for synthesizing cis-pinane.
The invention is realized by the following technical scheme.
Method for preparing cis-pinane by α -pinene hydrogenation under catalysis of sodium niobate supported ruthenium catalyst, Ru/NaNbO3Preparation of composite catalyst and α -pineneThe mass ratio of the two is 0.1-1: 100, the cis-pinane is prepared under the conditions that the reaction temperature is 120-140 ℃, the hydrogen pressure is 3-4MPa and the reaction time is 6-10 h, the catalytic activity is high, the catalyst is environment-friendly, the post-treatment is simple, and the catalyst can be recycled.
The detailed steps are as follows:
① adding 50g of α -pinene into a reaction kettle, and adding the prepared Ru/NaNbO according to the mass ratio of the catalyst to α -pinene of 0.1-1: 10030.05-0.5 g of composite catalyst, and sealing the reaction kettle;
replacing three to four times by using hydrogen under the gage pressure of 2.5-3.5 MPa, detecting leakage, and confirming that the reaction kettle is well sealed;
and thirdly, opening a hydrogen gas inlet valve, adjusting the pressure in the kettle to be 3-4MPa, opening a temperature rise controller of the reaction kettle, and reacting for 6-10 hours at the temperature of 120-140 ℃ and the stirring speed of 500 r/min.
A sodium niobate supported ruthenium catalyst for synthesizing cis-pinane by α -pinene hydrogenation is Ru/NaNbO3Wherein Ru is NaNbO3The mass ratio of (A) to (B) is 5-10: 100.
More particularly, NaNbO3From Nb2O5And NaOH according to the mass ratio of 3: 8.
A preparation method of a sodium niobate supported ruthenium catalyst for synthesizing cis-pinane by α -pinene hydrogenation comprises the step of adding Nb according to a mass ratio of 3:82O5Adding NaOH into a reaction container, adding deionized water and ethylene glycol, performing ultrasonic dispersion, sealing the reaction container, placing the reaction container in a constant-temperature oven for a period of time, cooling to room temperature after reaction, centrifuging, washing and drying the product to obtain NaNbO3(ii) a According to Ru and NaNbO3Adding RuCl with the mass ratio of 5-10:1003Standing at normal temperature for reaction for a period of time, heating, adding a proper amount of sodium borohydride solution, cooling to room temperature after reaction, centrifuging, washing and drying to obtain Ru/NaNbO3And (3) compounding a catalyst.
More specifically, a method for preparing a sodium niobate supported ruthenium catalyst for synthesizing cis-pinane by hydrogenating alpha-pinene, which comprises the following steps:
① weighing 0.15g Nb2O5Adding 0.4g of NaOH into a polytetrafluoroethylene reaction kettle, adding 2mL of deionized water and 14-26 mL of ethylene glycol, and carrying out ultrasonic treatment for 10-20 min;
secondly, after the ultrasonic treatment is finished, sealing the reaction kettle by using a stainless steel outer sleeve, and placing the reaction kettle in a constant-temperature oven at the temperature of 140-;
③ after the reaction, naturally cooling the reaction kettle to room temperature, centrifuging the product, washing the product with deionized water for 3-4 times, and drying the product at 60 ℃ for 10-15 h to obtain NaNbO3。
④ weighing 0.1g of the NaNbO ③3Adding into a conical flask, adding 250ml of deionized water, and performing ultrasonic treatment for 1 h;
⑤ after completion of sonication, Na was added to the flask2CO3Adjusting the pH value of the solution in the conical flask to be 9-10;
⑥ is heated to 35 ℃ according to the formula Ru and NaNbO3Adding 0.05-0.1 mmol of RuCl into the mixture according to the mass ratio of 5-10:1003Keeping the temperature at 35 ℃ for 3 h;
seventhly, after keeping at 35 ℃ for 3 hours, heating to 95 ℃, adding 0.2-2 ml of 300mM sodium borohydride solution, and keeping at 95 ℃ for 0.5 hour;
⑧ cooling the liquid obtained by ⑦ to room temperature, centrifugally washing for 3-4 times, and drying the product obtained by centrifugation at 60 ℃ for 10-15 hours to obtain Ru/NaNbO3And (3) compounding a catalyst.
Ru/NaNbO prepared by the invention3The composite catalyst belongs to a heterogeneous catalyst, has simple preparation process and easy recovery, can efficiently catalyze α -pinene to hydrogenate and synthesize cis-pinane at low temperature, is heated and stirred for 10 hours at 120 ℃, and is filled with 3.0MPa hydrogen and Ru/NaNbO3(wherein Ru is NaNbO)3The mass ratio of 5:100) is 100 percent, the selectivity of cis-pinane is 96.72 percent, and the conversion rate of α -pinene hydrogenation reaction is better than that of the similar heterogeneous catalyst.
Detailed Description
The process of the present invention is further illustrated by the following examples, which are not intended to limit the invention.
Example 1 Ru and NaNbO3Ru/NaNbO with the mass ratio of 3:1003Composite catalyst
① weighing 0.15g Nb2O5Adding 0.4g of NaOH into a polytetrafluoroethylene reaction kettle, adding 2mL of deionized water and 14mL of ethylene glycol, and carrying out ultrasonic treatment for 10 min;
secondly, after the ultrasonic treatment is finished, sealing the reaction kettle by using a stainless steel outer sleeve, and keeping the reaction kettle in a constant-temperature oven at 140 ℃ for 12 hours;
③ after the reaction, the reaction kettle is naturally cooled to room temperature, the product is dried for 10 hours at 60 ℃ after being centrifuged and washed by deionized water for 3 times, and NaNbO is obtained3。
④ weighing 0.1g of the NaNbO ③3Adding into a conical flask, adding 250ml of deionized water, and performing ultrasonic treatment for 1 h;
⑤ after completion of sonication, Na was added to the flask2CO3Adjusting the pH value of the solution in the conical flask to be 9-10;
⑥ is heated to 35 ℃ according to the formula Ru and NaNbO3In a mass ratio of 3:100, 0.03mmol of RuCl is added3Keeping the temperature at 35 ℃ for 3 h;
seventhly, after keeping the temperature at 35 ℃ for 3 hours, heating the mixture to 95 ℃, adding 0.6mL of 300mM sodium borohydride solution, and keeping the mixture at 95 ℃ for 0.5 hour;
⑧ cooling the liquid obtained by ⑦ to room temperature, centrifugally washing for 3-4 times, and drying the product obtained by centrifugation at 60 ℃ for 10-15 hours to obtain Ru/NaNbO3And (3) compounding a catalyst.
Example 2 Ru and NaNbO3Ru/NaNbO with the mass ratio of 5:1003Composite catalyst
① weighing 0.15g Nb2O5Adding 0.4g of NaOH into a polytetrafluoroethylene reaction kettle, adding 2mL of deionized water and 26mL of ethylene glycol, and carrying out ultrasonic treatment for 20 min;
secondly, after the ultrasonic treatment is finished, sealing the reaction kettle by using a stainless steel outer sleeve, and keeping the reaction kettle in a constant-temperature oven at 200 ℃ for 24 hours;
③ after the reaction, naturally cooling the reaction kettle to room temperature, centrifuging the product, washing the product with deionized water for 3-4 times, and drying the product at 60 ℃ for 15 hours to obtain NaNbO3。
④ weighing 0.1g ③The obtained NaNbO3Adding into a conical flask, adding 250ml of deionized water, and performing ultrasonic treatment for 1 h;
⑤ after completion of sonication, Na was added to the flask2CO3Adjusting the pH value in the conical flask to 9-10;
⑥ is heated to 35 ℃ according to the formula Ru and NaNbO3In a mass ratio of 5:100, 0.05mmol of RuCl is added3Keeping the temperature at 35 ℃ for 3 h;
seventhly, after keeping at 35 ℃ for 3 hours, heating to 95 ℃, adding 1mL of 300mM sodium borohydride solution, and keeping at 95 ℃ for 0.5 hour;
⑧ cooling the liquid obtained by ⑦ to room temperature, centrifugally washing for 4 times, and drying the product obtained by centrifugation at 60 ℃ for 10-15 hours to obtain Ru/NaNbO3And (3) compounding a catalyst.
Example 3 Ru and NaNbO3Ru/NaNbO with the mass ratio of 10:1003Composite catalyst
① weighing 0.15g Nb2O5Adding 0.4g of NaOH into a polytetrafluoroethylene reaction kettle, adding 2mL of deionized water and 14mL of ethylene glycol, and carrying out ultrasonic treatment for 10 min;
secondly, after the ultrasonic treatment is finished, sealing the reaction kettle by using a stainless steel outer sleeve, and keeping the reaction kettle in a constant-temperature oven at 140 ℃ for 12 hours;
③ after the reaction, the reaction kettle is naturally cooled to room temperature, the product is dried for 10 hours at 60 ℃ after being centrifuged and washed by deionized water for 3 times, and NaNbO is obtained3。
④ weighing 0.1g of NaNbO obtained in step ③3Adding into a conical flask, adding 250ml of deionized water, and performing ultrasonic treatment for 1 h;
⑤ after completion of sonication, Na was added to the flask2CO3Adjusting the pH value in the conical flask to 9-10;
⑥ is heated to 35 ℃ according to the formula Ru and NaNbO3In a mass ratio of 10:100, 0.1mmol of RuCl is added3Keeping the temperature at 35 ℃ for 3 h;
seventhly, after keeping the temperature at 35 ℃ for 3 hours, heating the mixture to 95 ℃, adding 2mL of 300mM sodium borohydride solution, and keeping the mixture at 95 ℃ for 0.5 hour;
⑧ cooling the liquid ⑦ to room temperature, centrifuging and washing for 3 times, and drying the product at 60 deg.C for 15h to obtain Ru/NaNbO3And (3) compounding a catalyst.
Synthesis of cis-pinane by selective hydrogenation of alpha-pinene
Example 4 according to the mass ratio of the catalyst to α -pinene being 0.1:100, 0.05g Ru/NaNbO3(wherein Ru is NaNbO)3The mass ratio of 3:100) and 50g of α -pinene are added into a polytetrafluoroethylene reaction kettle, hydrogen is used for replacing the air in the kettle for 4 times, then 3.0MPa hydrogen is filled, the kettle is heated and stirred for 6 hours at 120 ℃, the kettle is kept still and cooled to room temperature, the conversion rate of α -pinene is 4.82 percent, and the selectivity of cis-pinane is 0 percent.
Example 5 according to the mass ratio of the catalyst to α -pinene being 0.1:100, 0.05g Ru/NaNbO3(wherein Ru is NaNbO)3The mass ratio of the raw materials is 5:100) and 50g of α -pinene are added into a polytetrafluoroethylene reaction kettle, the air in the kettle is replaced by hydrogen for 4 times, then 3.0MPa hydrogen is filled, the kettle is heated and stirred for 6 hours at 100 ℃, the kettle is kept still and cooled to room temperature, the conversion rate of α -pinene is 2.63 percent, and the selectivity of cis-pinane is 0 percent.
Example 6 according to the mass ratio of the catalyst to α -pinene being 0.1:100, 0.05g Ru/NaNbO3(wherein Ru is NaNbO)3The mass ratio of the raw materials is 5:100) and 50g of α -pinene are added into a polytetrafluoroethylene reaction kettle, hydrogen is used for replacing the air in the kettle for 4 times, then 1.0MPa hydrogen is filled, the kettle is heated and stirred for 6 hours at 120 ℃, the kettle is kept still and cooled to room temperature, the conversion rate of α -pinene is 2.54 percent, and the selectivity of cis-pinane is 0 percent.
Example 7 according to a catalyst to α -pinene mass ratio of 0.1:100, 0.05g Ru/NaNbO3(wherein Ru is NaNbO)3The mass ratio of the raw materials is 5:100) and 50g of α -pinene are added into a polytetrafluoroethylene reaction kettle, the air in the kettle is replaced by hydrogen for 4 times, then 3.0MPa hydrogen is filled, the kettle is heated and stirred for 6 hours at 120 ℃, the kettle is kept still and cooled to room temperature, the conversion rate of α -pinene is 95.18 percent, and the selectivity of cis-pinane is 95.59 percent.
Example 8 according to a catalyst to α -pinene mass ratio of 0.1:100, 0.05g Ru/NaNbO3(wherein Ru is NaNbO)3Mass ofThe ratio is 5:100) and 50g α -pinene are added into a polytetrafluoroethylene reaction kettle, the air in the kettle is replaced by hydrogen for 4 times, then 3.0MPa hydrogen is filled, the mixture is heated and stirred for 10 hours at 120 ℃, the mixture is kept stand and cooled to room temperature, the conversion rate of α -pinene is 100 percent, and the selectivity of cis-pinane is 96.72 percent.
Example 9 according to a catalyst to α -pinene mass ratio of 0.1:100, 0.05g Ru/NaNbO3(wherein Ru is NaNbO)3The mass ratio of the raw materials is 5:100) and 50g of α -pinene are added into a polytetrafluoroethylene reaction kettle, 4 times of hydrogen is used for replacing the air in the kettle, 4.0MPa hydrogen is filled, the kettle is heated and stirred for 6 hours at 120 ℃, the kettle is kept still and cooled to room temperature, the conversion rate of α -pinene is 100 percent, and the selectivity of cis-pinane is 96.12 percent.
Example 10 according to a catalyst to α -pinene mass ratio of 0.1:100, 0.05g Ru/NaNbO3(wherein Ru is NaNbO)3The mass ratio of the raw materials is 5:100) and 50g of α -pinene are added into a polytetrafluoroethylene reaction kettle, the air in the kettle is replaced by hydrogen for 4 times, then 3.0MPa hydrogen is filled, the kettle is heated and stirred for 6 hours at the temperature of 140 ℃, the kettle is kept still and cooled to the room temperature, the conversion rate of α -pinene is 100 percent, and the selectivity of cis-pinane is 96.48 percent.
Example 11 according to a catalyst to α -pinene mass ratio of 0.1:100, 0.05g Ru/NaNbO3(wherein Ru is NaNbO)3The mass ratio of 10:100) and 50g of α -pinene are added into a polytetrafluoroethylene reaction kettle, hydrogen is used for replacing the air in the kettle for 4 times, then 3.0MPa hydrogen is filled, the kettle is heated and stirred for 6 hours at 120 ℃, the kettle is kept still and cooled to room temperature, the conversion rate of α -pinene is 100 percent, and the selectivity of cis-pinane is 96.56 percent.
Example 12 according to a catalyst to α -pinene mass ratio of 0.5:100, 0.25g Ru/NaNbO3(wherein Ru is NaNbO)3The mass ratio of 10:100) and 50g of α -pinene are added into a polytetrafluoroethylene reaction kettle, hydrogen is used for replacing the air in the kettle for 4 times, then 3.0MPa hydrogen is filled, the kettle is heated and stirred for 6 hours at 120 ℃, the kettle is kept still and cooled to room temperature, the conversion rate of α -pinene is 100 percent, and the selectivity of cis-pinane is 96.13 percent.
Example 13 according to a mass ratio of catalyst to α -pinene of 1:100, 0.5g Ru/NaNbO3(wherein Ru is NaNbO)3The mass ratio of 10:100) and 50g of α -pinene are added into a polytetrafluoroethylene reaction kettle, hydrogen is used for replacing the air in the kettle for 4 times, then 3.0MPa hydrogen is filled, the kettle is heated and stirred for 6 hours at 120 ℃, the kettle is kept still and cooled to room temperature, the conversion rate of α -pinene is 100 percent, and the selectivity of cis-pinane is 96.25 percent.
The above examples show that Ru/NaNbO3Medium Ru and NaNbO3When the mass ratio of the components is 3:100, the conversion rate of α -pinene is 4.82%, the selectivity of cis-pinane is 0%, and the catalytic effect is poor, when the catalytic reaction temperature is 100 ℃, the conversion rate of α -pinene is 2.63%, the selectivity of cis-pinane is 0%, when 1.0MPa hydrogen is filled in a kettle, the conversion rate of α -pinene is 2.54%, and the selectivity of cis-pinane is 0%3Medium Ru and NaNbO3The mass ratio of (1) is 5-10:100, the reaction temperature is 120-.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (4)
1. A method for preparing cis-pinane by α -pinene hydrogenation under the catalysis of a sodium niobate supported ruthenium catalyst is characterized in that Ru/NaNbO3The preparation process of the composite catalyst comprises the following steps:
① weighing 0.15g Nb2O5Adding 0.4g of NaOH into a polytetrafluoroethylene reaction kettle, adding 2mL of deionized water and 14-26 mL of ethylene glycol, and carrying out ultrasonic treatment for 10-20 min;
secondly, after the ultrasonic treatment is finished, sealing the reaction kettle by using a stainless steel outer sleeve, and placing the reaction kettle in a constant-temperature oven at the temperature of 140-;
③ after the reaction, naturally cooling the reaction kettle to room temperature, centrifuging the product, washing the product with deionized water for 3-4 times, and drying the product at 60 ℃ for 10-15 h to obtain NaNbO3；
④ weighing 0.1g of the NaNbO ③3Adding into an Erlenmeyer flask, adding 250mlIonized water and ultrasonic treatment for 1 h;
⑤ after completion of sonication, Na was added to the flask2CO3Adjusting the pH value of the solution in the conical flask to be 9-10;
⑥ is heated to 35 ℃ according to the formula Ru and NaNbO3Adding 0.05-0.1 mmol of RuCl into the mixture according to the mass ratio of 5-10:1003Keeping the temperature at 35 ℃ for 3 h;
seventhly, after keeping at 35 ℃ for 3 hours, heating to 95 ℃, adding 0.2-2 ml of 300mM sodium borohydride solution, and keeping at 95 ℃ for 0.5 hour;
⑧ cooling the liquid obtained by ⑦ to room temperature, centrifugally washing for 3-4 times, and drying the product obtained by centrifugation at 60 ℃ for 10-15 hours to obtain Ru/NaNbO3A composite catalyst;
Ru/NaNbO3ru and NaNbO in composite catalyst3The mass ratio of Ru to NaNbO is 5-10:1003The mass ratio of the composite catalyst to α -pinene is 0.1-1: 100, the composite catalyst and the α -pinene are mixed, the reaction temperature is 120-140 ℃, the hydrogen pressure is 3-4MPa, and the reaction time is 6-10 h.
2. The method for preparing cis-pinane by hydrogenating alpha-pinene under the catalysis of the sodium niobate supported ruthenium catalyst according to claim 1, which is characterized in that: the method comprises the following steps:
① adding 50g of α -pinene into a reaction kettle, and adding the prepared Ru/NaNbO according to the mass ratio of the catalyst to α -pinene of 0.1-1: 10030.05-0.5 g of composite catalyst, and sealing the reaction kettle;
replacing three to four times by using hydrogen under the gage pressure of 2.5-3.5 MPa, detecting leakage, and confirming that the reaction kettle is well sealed;
and thirdly, opening a hydrogen gas inlet valve, adjusting the pressure in the kettle to be 3-4MPa, opening a temperature rise controller of the reaction kettle, and reacting for 6-10 hours at the temperature of 120-140 ℃ and the stirring speed of 500 r/min.
3. A preparation method of a sodium niobate supported ruthenium catalyst for synthesizing cis-pinane by α -pinene hydrogenation is characterized in that Nb is added according to a mass ratio of 3:82O5Adding NaOH into a reaction vessel, adding deionized waterUltrasonically dispersing water and ethylene glycol, sealing the reaction container, placing the container in a constant-temperature oven for a period of time, cooling to room temperature after reaction, centrifuging, washing and drying the product to obtain NaNbO3(ii) a According to Ru and NaNbO3Adding RuCl with the mass ratio of 5-10:1003Standing at normal temperature for reaction for a period of time, heating, adding a proper amount of sodium borohydride solution, cooling to room temperature after reaction, centrifuging, washing and drying to obtain Ru/NaNbO3And (3) compounding a catalyst.
4. The preparation method of the sodium niobate supported ruthenium catalyst used for the hydrogenation synthesis of cis-pinane by alpha-pinene according to claim 3, which is characterized in that: the method comprises the following steps:
① weighing 0.15g Nb2O5Adding 0.4g of NaOH into a polytetrafluoroethylene reaction kettle, adding 2mL of deionized water and 14-26 mL of ethylene glycol, and carrying out ultrasonic treatment for 10-20 min;
secondly, after the ultrasonic treatment is finished, sealing the reaction kettle by using a stainless steel outer sleeve, and placing the reaction kettle in a constant-temperature oven at the temperature of 140-;
③ after the reaction, naturally cooling the reaction kettle to room temperature, centrifuging the product, washing the product with deionized water for 3-4 times, and drying the product at 60 ℃ for 10-15 h to obtain NaNbO3；
④ weighing 0.1g of the NaNbO ③3Adding into a conical flask, adding 250ml of deionized water, and performing ultrasonic treatment for 1 h;
⑤ after completion of sonication, Na was added to the flask2CO3Adjusting the pH value of the solution in the conical flask to be 9-10;
⑥ is heated to 35 ℃ according to the formula Ru and NaNbO3Adding 0.05-0.1 mmol of RuCl into the mixture according to the mass ratio of 5-10:1003Keeping the temperature at 35 ℃ for 3 h;
seventhly, after keeping at 35 ℃ for 3 hours, heating to 95 ℃, adding 0.2-2 ml of 300mM sodium borohydride solution, and keeping at 95 ℃ for 0.5 hour;
⑧ cooling the liquid obtained by ⑦ to room temperature, centrifugally washing for 3-4 times, and drying the product obtained by centrifugation at 60 ℃ for 10-15 hours to obtain Ru/NaNbO3And (3) compounding a catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710867024.0A CN107652154B (en) | 2017-09-22 | 2017-09-22 | Method for preparing cis-pinane by catalyzing alpha-pinene hydrogenation by sodium niobate supported ruthenium catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710867024.0A CN107652154B (en) | 2017-09-22 | 2017-09-22 | Method for preparing cis-pinane by catalyzing alpha-pinene hydrogenation by sodium niobate supported ruthenium catalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107652154A CN107652154A (en) | 2018-02-02 |
| CN107652154B true CN107652154B (en) | 2020-10-09 |
Family
ID=61131216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710867024.0A Active CN107652154B (en) | 2017-09-22 | 2017-09-22 | Method for preparing cis-pinane by catalyzing alpha-pinene hydrogenation by sodium niobate supported ruthenium catalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107652154B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109097043B (en) * | 2018-09-14 | 2021-07-20 | 广东工业大学 | Erbium and ytterbium double-doped sodium niobate up-conversion material and preparation method and application thereof |
| CN113735677B (en) * | 2021-09-30 | 2024-02-27 | 江西省科学院应用化学研究所 | Method for preparing cis-pinane by catalyzing alpha-pinene hydrogenation through L-malic acid intercalated magnesium-aluminum hydrotalcite supported ruthenium catalyst |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4310714A (en) * | 1980-12-10 | 1982-01-12 | Union Camp Corporation | Hydrogenation of α-pinene to cis-pinane |
| US5132270A (en) * | 1990-08-30 | 1992-07-21 | Huels Aktiengesellschaft | Ultrasound method of reactivating deactivated hydrogenation catalyts |
| WO2002072508A1 (en) * | 2001-03-09 | 2002-09-19 | Valtion Teknillinen Tutkimuskeskus | HYDROGENATION OF α-PINENE |
-
2017
- 2017-09-22 CN CN201710867024.0A patent/CN107652154B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4310714A (en) * | 1980-12-10 | 1982-01-12 | Union Camp Corporation | Hydrogenation of α-pinene to cis-pinane |
| US5132270A (en) * | 1990-08-30 | 1992-07-21 | Huels Aktiengesellschaft | Ultrasound method of reactivating deactivated hydrogenation catalyts |
| WO2002072508A1 (en) * | 2001-03-09 | 2002-09-19 | Valtion Teknillinen Tutkimuskeskus | HYDROGENATION OF α-PINENE |
Non-Patent Citations (3)
| Title |
|---|
| Solvent-Free and Highly Efficient Hydrogenation of α-Pinene to Synthesize cis-Pinane by Using Ru Species Immobilized on APTS-Functionalized Cubic Phase NaNbO3;Yin Hu et al.;《Catalysis Letters》;20181017;第149卷(第1期);第180-189页 * |
| Visible light active Ru-doped sodium niobate pervoskite decorated with platinum nanoparticles via surface capping;Blain Paul et al.;《Catalysis Today》;20131215;第230卷;第138-144页 * |
| 铌酸/氧化铌在多相催化反应中的应用;李应成等;《化学通报》;20051231(第3期);第172-178页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107652154A (en) | 2018-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110433823B (en) | Catalyst for synthesizing diaminomethylcyclohexane, and preparation method and application thereof | |
| CN107376997B (en) | Preparation and application of catalyst for preparing benzaldehyde by oxidizing benzyl alcohol | |
| CN107056649A (en) | A kind of preparation method and applications for the metal-organic framework materials for loading schiff bases complex | |
| CN107652154B (en) | Method for preparing cis-pinane by catalyzing alpha-pinene hydrogenation by sodium niobate supported ruthenium catalyst | |
| CN103922931B (en) | A kind of method of a step catalytically synthesizing glycol ether acetate | |
| CN107827709B (en) | Method for synthesizing crotyl alcohol by photocatalytic ethanol conversion | |
| CN109569589A (en) | A kind of levulic acid adds hydrogen gamma-valerolactone M-B@Al2O3Catalyst and its preparation method and application | |
| CN107513004B (en) | Method for synthesizing cis-pinane by selective hydrogenation of alpha-pinene and catalyst thereof | |
| CN107245065A (en) | A kind of method that catalytic hydrogenation ethyl levulinate prepares valerolactone | |
| CN105689002B (en) | Support type tungsten gallium polyoxometallate catalyst and the preparation method and application thereof | |
| CN106955705A (en) | A kind of gas-phase photocatalysis methanol and ethanol disposably synthesize the preparation and application of the copper catalyst of a variety of ester type compounds | |
| CN113735677B (en) | Method for preparing cis-pinane by catalyzing alpha-pinene hydrogenation through L-malic acid intercalated magnesium-aluminum hydrotalcite supported ruthenium catalyst | |
| EP2495241B1 (en) | Endo-methylene hexahydrophthalic anhydride and production method thereof | |
| CN108404919B (en) | Copper-carbon catalyst for synthesizing fatty alcohol by ester liquid-phase hydrogenation and preparation method thereof | |
| CN107089898A (en) | A kind of method of biomass phenolic compound catalytic hydrogenation synthesizing cyclohexane 1 alcohols compound | |
| CN111099979A (en) | Preparation method of β -ionone | |
| CN108144618B (en) | Hydrogenation catalyst, preparation method and application thereof | |
| CN114315532B (en) | Method for synthesizing 1, 4-tetraalkoxy-2-butene from 2, 2-dialkoxy acetaldehyde | |
| CN107519867B (en) | Preparation method of ruthenium-supported titanium dioxide catalyst for synthesizing cis-pinane by selective hydrogenation of α -pinene | |
| CN114522738B (en) | Method for preparing 1, 3-propylene glycol by one-step hydrogenation of 3-acetoxy propionaldehyde | |
| CN111686795B (en) | One-pot preparation method of sulfur-doped KL molecular sieve packaged rhodium nanoparticle core-shell catalyst and application of sulfur-doped KL molecular sieve packaged rhodium nanoparticle core-shell catalyst in catalyzing selective hydrogenation of phenol | |
| CN108929224A (en) | A method of preparation 5- hydroxyl methyl is catalyzed using bifunctional catalyst | |
| CN110590860B (en) | Method for preparing lignin oligomer by selective reductive degradation | |
| CN109678655B (en) | Application of nickel-iron hydrotalcite catalyst in preparation of benzyl alcohol | |
| CN104888778B (en) | A kind of Cu/MgO catalyst of catalysis glucose hydrogenolysis and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |