CN112547041B - Tin/tantalum bimetallic oxide catalyst and preparation method and application thereof - Google Patents
Tin/tantalum bimetallic oxide catalyst and preparation method and application thereof Download PDFInfo
- Publication number
- CN112547041B CN112547041B CN201910920054.2A CN201910920054A CN112547041B CN 112547041 B CN112547041 B CN 112547041B CN 201910920054 A CN201910920054 A CN 201910920054A CN 112547041 B CN112547041 B CN 112547041B
- Authority
- CN
- China
- Prior art keywords
- solution
- tin
- tantalum
- mixture
- catalyst
- 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
-
- 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
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/20—Vanadium, niobium or tantalum
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
- C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
- C07C51/23—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of oxygen-containing groups to carboxyl groups
- C07C51/245—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of oxygen-containing groups to carboxyl groups of keto groups or secondary alcohol groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
The invention relates to a tin/tantalum bimetallic oxide catalyst and a preparation method and application thereof. The method for preparing the catalyst comprises the following steps: s1, mixing a potassium tantalate solution with a template agent solution to obtain a mixed solution, mixing the mixed solution with a tin tetrachloride solution, and heating and stirring to obtain a mixture; s2, crystallizing the mixture to obtain a catalyst precursor; and S3, drying the catalyst precursor and roasting to obtain the tin/tantalum bimetallic oxide catalyst. The catalyst obtained by the method for preparing the tin/tantalum bimetallic oxide catalyst has excellent catalytic performance for preparing lactic acid by dihydroxyacetone, can realize the conversion rate of dihydroxyacetone of 100%, and has the yield of lactic acid of better than 90%.
Description
Technical Field
The invention belongs to the field of lactic acid preparation, and particularly relates to a tin/tantalum bimetallic oxide catalyst, a preparation method thereof and application thereof in catalyzing dihydroxyacetone to prepare lactic acid.
Background
With the continuous consumption of primary energy sources such as coal and petroleum, the research of renewable secondary energy sources inevitably generates a great deal of pollution in the use process of the primary energy sources, and the research of renewable secondary energy sources is focused by researchers worldwide, wherein the chemical conversion of carbohydrates is now an important interdisciplinary research hotspot, and the research on the catalytic conversion of carbohydrates tends to build a biochemical system similar to the development of the existing fossil energy sources since the 21 st century, and the most ideal is to simultaneously produce biofuel and high-value biochemicals. Lactic acid is an important multifunctional platform compound in the biomass energy conversion process, and a method for preparing lactic acid by exploring high-efficiency chemical methods to decompose saccharides is increasingly favored by vast scientific researchers, and the chemical methods, whether in a homogeneous phase or a heterogeneous phase form, are the most direct and effective methods for converting biomass raw materials such as cellulose, saccharides and the like. Dihydroxyacetone is a three-carbon sugar, is an important raw material for producing lactic acid, is also a product of decomposition of a plurality of monosaccharides and disaccharides, and has remarkable significance in the aspect of biomass energy utilization in developing a lactic acid preparation catalyst using dihydroxyacetone as a substrate.
At present, in the heterogeneous catalytic reaction for preparing lactic acid by using all dihydroxyacetone, the catalyst with the best catalytic effect is reported to be a modified Beta molecular sieve in the literature, and when the reaction temperature is 125 ℃, the DHA conversion rate of the Ti-Beta, zr-Beta and Sn-Beta three modified Beta molecular sieve catalysts is 100%, the lactic acid yield of the Ti-Beta is 44%, the lactic acid yield of the Zr-Beta is 25% and the lactic acid yield of the Sn-Beta is 90%.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for preparing a tin/tantalum bimetallic oxide catalyst, and the tin/tantalum bimetallic oxide catalyst obtained by the method has excellent catalytic performance for preparing lactic acid from dihydroxyacetone, can realize the conversion rate of dihydroxyacetone of 100%, and has the lactic acid yield of better than 90%.
To this end, a first aspect of the present invention provides a method of preparing a tin/tantalum bimetallic oxide catalyst comprising the steps of:
s1, mixing a potassium tantalate solution with a template agent solution to obtain a mixed solution, mixing the mixed solution with a tin tetrachloride solution, and heating to obtain a mixture; preferably, the volume ratio of the potassium tantalate solution to the template agent solution is 1 (0.5-5).
S2, crystallizing the mixture to obtain a catalyst precursor;
and S3, drying the catalyst precursor and roasting to obtain the tin/tantalum bimetallic oxide catalyst.
The inventors of the present application have found through studies that, in the preparation of the catalyst, the catalyst obtained without using the template can catalyze dihydroxyacetone to prepare lactic acid, but the catalyst obtained after using the template has more excellent performance in catalyzing dihydroxyacetone to prepare lactic acid.
In some embodiments of the invention, the mixed liquor is heated prior to mixing with the tin tetrachloride solution; preferably, the mixture is heated and stirred at 35-55 ℃ for 15-45 min.
In other embodiments of the present invention, in step S1, the heating conditions are: heating and stirring for 1-5 h at 35-55 ℃, then heating to 70-90 ℃ and continuing heating and stirring for 1-3 h.
In some embodiments of the invention, the method of preparing a potassium tantalate solution comprises the steps of:
t1, mixing and grinding tantalum oxide and potassium hydroxide to obtain a mixture;
and T2, roasting the mixture, cooling, and dissolving in water to obtain the potassium tantalate solution.
In some embodiments of the invention, in step T1, the molar ratio of tantalum oxide to potassium hydroxide is 1 (8-12).
In other embodiments of the present invention, in step T2, the firing is performed at a temperature of 400 to 600 ℃ for a time of 5 to 8 hours.
In some embodiments of the invention, the potassium tantalate solution has a concentration of 0.01mol/L to 0.1mol/L.
In other embodiments of the invention, the concentration of the tin tetrachloride solution is 0.5mol/L to 5mol/L.
In some embodiments of the invention, the concentration of the template solution is 20g/L to 30g/L. In some embodiments of the invention, the templating agent is P123 (polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer).
In some embodiments of the invention, the volume ratio of the tin tetrachloride solution to the potassium tantalate solution is (1:5) - (5:1).
In some embodiments of the present invention, in step S2, the crystallization temperature is 120 to 180 ℃ and the crystallization time is 0.5 to 3d.
In other embodiments of the present invention, in step S3, the baking temperature is 300 ℃ to 650 ℃ for 2 to 8 hours. Preferably, the roasting temperature is 450 ℃, and the roasting time is 5 hours.
In some embodiments of the present invention, the tin/tantalum bimetallic oxide catalyst is produced with a tin to tantalum molar ratio of (0.5 to 15): 1.
SnO is present at 2θ=26.7 °, 34.0 °, 51.8 °, 64.9 ° on the X-ray diffraction spectrum of the catalyst 2 Is a characteristic diffraction peak of (2).
In some embodiments of the invention, a method of preparing a tin/tantalum bimetallic oxide catalyst comprises the steps of:
1) Preparation of potassium tantalate solution: mixing tantalum oxide and potassium hydroxide according to a molar ratio of 1 (8-12), grinding the mixture to powder, and obtaining a mixture after the mixing and grinding are finished; placing the mixture into a muffle furnace to be roasted for 5-8 hours at 400-600 ℃, cooling the mixture to room temperature in air, and dissolving the mixture into water to prepare potassium tantalate solution with the concentration of 0.01-0.1 mol/L;
2) Preparing a tin tetrachloride solution: dissolving tin tetrachloride pentahydrate solid in water to obtain tin tetrachloride solution with the concentration of 0.5 mol/L-5 mol/L;
3) Preparing a template agent solution: dissolving a certain amount of template agent into water, wherein the concentration is 20g/L-30g/L;
4) Putting a potassium tantalate solution into a container, adding a template agent solution to obtain a mixed solution, controlling the temperature of the mixed solution to be 35-55 ℃ and heating and stirring for 15-45 min, dropwise adding a tin tetrachloride solution under the stirring condition, heating and stirring for 1-5 h at 35-55 ℃ after the dropwise adding is finished, and then heating and stirring for 1-3 h at 70-90 ℃ continuously to obtain a mixture;
4) Transferring the mixture obtained in the step 3) to a crystallization kettle for crystallization for 0.5-3 d at 120-180 ℃;
5) And after crystallization, filtering, washing and drying the product in the crystallization kettle, and roasting at 300-650 ℃ for 2-8 hours to obtain the bimetallic oxide catalyst.
In a third aspect, the present invention provides a method for catalyzing dihydroxyacetone to prepare lactic acid, which comprises the step of contacting dihydroxyacetone with a catalyst prepared by the method according to the first aspect of the present invention, and obtaining a product containing lactic acid after reaction.
In some embodiments of the invention, the temperature of the reaction is 120 to 160 ℃.
In other embodiments of the present invention, the mass ratio of the dihydroxyacetone to the catalyst is (1 to 5): 1.
The beneficial effects of the invention are as follows: the bimetallic oxide catalyst for catalyzing dihydroxyacetone to prepare lactic acid provided by the invention has excellent dihydroxyacetone to prepare lactic acid catalytic performance, can realize dihydroxyacetone conversion rate of 100%, and has lactic acid yield of better than 90%.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is an X-ray diffraction pattern of the bimetallic oxide catalyst prepared in examples 1-4.
Detailed Description
In order that the invention may be more readily understood, the invention will be further described in detail with reference to the following examples, which are given by way of illustration only and are not limiting in scope of application. The starting materials or components used in the present invention may be prepared by commercial or conventional methods unless specifically indicated.
In the following examples, the catalyst performance evaluation was performed by the following methods:
1) Weighing a reaction substrate dihydroxyacetone 60mg and a catalyst 30mg, placing the reaction substrate dihydroxyacetone and the catalyst in a reactor, transferring 3mL of deionized water into the reactor by using a pipette, heating to 140 ℃, and reacting in a heat-collecting type magnetic heating stirrer.
2) And taking out the reactor after the reaction is finished, cooling to room temperature, taking out part of the product by using a syringe, and analyzing the conversion rate and the product yield by using liquid chromatography.
Example 1
1) Weigh 4.41g Ta 2 O 5 Mixing with 5.6g KOH in a grinding pot, grinding to powder, and obtaining a mixture after the mixed grinding is finished; transferring the mixture into a crucible, roasting for 6 hours at 500 ℃, taking out, placing in a beaker, adding 200mL of water for dissolution, and obtaining KTaO 3 The concentration of the solution is 0.1mol/L;
2) 52.58g of tin tetrachloride pentahydrate solid is weighed, dissolved in a beaker by adding a small amount of water, and then transferred to a 500mL volumetric flask to prepare a tin tetrachloride solution, wherein the concentration is 0.3mol/L;
3) 1.2g of P123 is taken in a three-neck flask, 50mL of deionized water is added, the mixture is slowly stirred at 40 ℃ until the mixture is dissolved, and 75mL of KTaO is added 3 The solution was stirred at 40℃for 30min in a three-necked flask, and 25ml of SnCl was added dropwise 4 Stirring the solution for 1h, heating to 80 ℃ and stirring for 2h to obtain a mixture;
4) Transferring the mixture to a crystallization kettle for crystallization at 160 ℃ for 1d to obtain a catalyst precursor;
5) Filtering, washing, drying, and roasting at 550 ℃ for 5 hours to obtain the bimetallic oxide catalyst (the mol ratio of tin to tantalum in the catalyst is 1:1, and an X-ray diffraction diagram is shown in figure 1A).
The catalytic performance evaluation result shows that in the reaction of preparing lactic acid by catalyzing dihydroxyacetone by using the catalyst prepared in the example 1, the conversion rate of dihydroxyacetone reaches 100% at 40min, the methylglyoxal yield reaches 78.21% at 15min, and the lactic acid yield reaches 64-65% at 90 min.
Example 2
1) Weigh 4.41g Ta 2 O 5 Mixing with 5.6g KOH in a grinding pot, grinding to powder, and obtaining a mixture after the mixed grinding is finished; transferring the mixture into a crucible, roasting for 6 hours at 500 ℃, taking out, placing in a beaker, adding 200mL of water for dissolution, and obtaining KTaO 3 The concentration of the solution is 0.1mol/L;
2) 52.58g of tin tetrachloride pentahydrate solid is weighed, dissolved in a beaker by adding a small amount of water, and then transferred to a 500mL volumetric flask to prepare a tin tetrachloride solution, wherein the concentration is 0.3mol/L;
3) 1.2g of P123 is taken in a three-neck flask, 50mL of deionized water is added, the mixture is slowly stirred at 40 ℃ until the mixture is dissolved, and 25mL of KTaO is added 3 The solution was stirred at 40℃for 30min in a three-necked flask and 75ml of SnCl was added dropwise 4 Stirring the solution for 1h, heating to 80 ℃ and stirring for 2h to obtain a mixture;
4) Transferring the mixture to a crystallization kettle for crystallization at 160 ℃ for 1d to obtain a catalyst precursor;
5) Filtering, washing, drying, and roasting at 450 ℃ for 5 hours to obtain the bimetallic oxide catalyst (the mol ratio of tin to tantalum in the catalyst is 9:1), wherein an X-ray diffraction diagram is shown in the attached figure 1B.
The catalytic performance evaluation result shows that in the reaction of preparing lactic acid by catalyzing dihydroxyacetone by using the catalyst prepared in the example 2, the conversion rate of dihydroxyacetone reaches 100% at 40min, the methylglyoxal yield reaches the highest value of 86.39% at 15min, and the lactic acid yield reaches the highest value of 70-72% at 90 min.
Example 3
1) Weigh 4.41g Ta 2 O 5 Mixing with 5.6g KOH in a grinding pot, grinding to powder, and obtaining a mixture after the mixed grinding is finished; transferring the mixture into a crucible, roasting for 6 hours at 500 ℃, taking out, placing in a beaker, adding 200mL of water for dissolution, and obtaining KTaO 3 The concentration of the solution is 0.1mol/L;
2) 52.58g of tin tetrachloride pentahydrate solid is weighed, dissolved in a beaker by adding a small amount of water, and then transferred to a 500mL volumetric flask to prepare a tin tetrachloride solution, wherein the concentration is 0.3mol/L;
3) 1.2g of P123 is taken in a three-neck flask, 50mL of deionized water is added, the mixture is slowly stirred at 40 ℃ until the mixture is dissolved, and 100mL of KTaO is added 3 The solution was stirred at 40℃for 30min in a three-necked flask, and 25ml of SnCl was added dropwise 4 Stirring the solution for 1h, heating to 80 ℃ and stirring for 2h to obtain a mixture;
4) Transferring the mixture to a crystallization kettle for crystallization at 160 ℃ for 1d to obtain a catalyst precursor;
5) Filtering, washing, drying, and roasting at 650 ℃ for 5 hours to obtain the bimetallic oxide catalyst (the mol ratio of tin to tantalum in the catalyst is 0.75:1, and an X-ray diffraction diagram is shown in the attached figure 1C).
The catalytic performance evaluation result shows that in the reaction of preparing lactic acid by catalyzing dihydroxyacetone by using the catalyst prepared in the example 3, the conversion rate of dihydroxyacetone reaches 100% at 40min, the methylglyoxal yield reaches the highest value of 70.82% at 15min, and the lactic acid yield reaches the highest value of 64-65% at 60 min.
Example 4
1) Weigh 4.41g Ta 2 O 5 Mixing with 5.6g KOH in a grinding pot, grinding to powder, and obtaining a mixture after the mixed grinding is finished; transferring the mixture into a crucible, roasting for 6 hours at 500 ℃, taking out, placing in a beaker, adding 200mL of water for dissolution, and obtaining KTaO 3 The concentration of the solution is 0.1mol/L;
2) 52.58g of tin tetrachloride pentahydrate solid is weighed, dissolved in a beaker by adding a small amount of water, and then transferred to a 500mL volumetric flask to prepare a tin tetrachloride solution, wherein the concentration is 0.3mol/L;
3) 1.2g of P123 is taken in a three-neck flask, 50mL of deionized water is added, the mixture is slowly stirred at 40 ℃ until the mixture is dissolved, and 25mL of KTaO is added 3 The solution was stirred at 40℃for 30min in a three-necked flask and 100ml of SnCl was added dropwise 4 Stirring the solution for 1h, heating to 80 ℃ and stirring for 2h to obtain a mixture;
4) Transferring the mixture to a crystallization kettle for crystallization at 160 ℃ for 1d to obtain a catalyst precursor;
5) Filtering, washing, drying, and roasting at 450 ℃ for 5 hours to obtain the bimetallic oxide catalyst (the mol ratio of tin to tantalum in the catalyst is 12:1), wherein an X-ray diffraction diagram is shown in the attached figure 1D.
The catalytic performance evaluation result shows that in the reaction of preparing lactic acid by catalyzing dihydroxyacetone by using the catalyst prepared in the example 4, the conversion rate of dihydroxyacetone reaches 100% at 40min, the methylglyoxal yield reaches 90.76% at 15min, and the lactic acid yield reaches 95-96% at 120 min.
Example 5
1) Weigh 4.41g Ta 2 O 5 Mixing with 5.6g KOH in a grinding bowl and grinding to powderThe mixture is obtained after the end of the mixing and grinding; transferring the mixture into a crucible, roasting for 6 hours at 500 ℃, taking out, placing in a beaker, adding 200mL of water for dissolution, and obtaining KTaO 3 The concentration of the solution is 0.1mol/L;
2) 52.58g of tin tetrachloride pentahydrate solid is weighed, dissolved in a beaker by adding a small amount of water, and then transferred to a 500mL volumetric flask to prepare a tin tetrachloride solution, wherein the concentration is 0.3mol/L;
3) 1.2g of P123 is taken in a three-neck flask, 50mL of deionized water is added, the mixture is slowly stirred at 40 ℃ until the mixture is dissolved, and 25mL of KTaO is added 3 The solution was stirred at 40℃for 30min in a three-necked flask and 100ml of SnCl was added dropwise 4 Stirring the solution for 1h, heating to 80 ℃ and stirring for 2h to obtain a mixture;
4) Transferring the mixture to a crystallization kettle for crystallization at 160 ℃ for 1d to obtain a catalyst precursor;
5) Filtering, washing, drying and roasting at 550 ℃ for 5 hours to obtain the bimetallic oxide catalyst (the mol ratio of tin to tantalum in the catalyst is 12:1).
The catalytic performance evaluation result shows that in the reaction of preparing lactic acid by catalyzing dihydroxyacetone by using the catalyst prepared in the example 5, the conversion rate of dihydroxyacetone reaches 100% at 60min, the methylglyoxal yield reaches 51% at 30min, and the lactic acid yield reaches 78% at min.
Example 6
1) Weigh 4.41g Ta 2 O 5 Mixing with 5.6g KOH in a grinding pot, grinding to powder, and obtaining a mixture after the mixed grinding is finished; transferring the mixture into a crucible, roasting for 6 hours at 500 ℃, taking out, placing in a beaker, adding 200mL of water for dissolution, and obtaining KTaO 3 The concentration of the solution is 0.1mol/L;
2) 52.58g of tin tetrachloride pentahydrate solid is weighed, dissolved in a beaker by adding a small amount of water, and then transferred to a 500mL volumetric flask to prepare a tin tetrachloride solution, wherein the concentration is 0.3mol/L;
3) 25ml of KTaO was taken 3 The solution was stirred in a three-necked flask at 40℃for 30min and 100ml of SnCl was added dropwise 4 Stirring the solution for 1h, heating to 80 ℃ and stirring for 2h to obtain a mixture;
4) Transferring the mixture to a crystallization kettle for crystallization at 160 ℃ for 1d to obtain a catalyst precursor;
5) Filtering, washing, drying and roasting at 450 ℃ for 5 hours to obtain the bimetallic oxide catalyst (the mol ratio of tin to tantalum in the catalyst is 12:1).
The catalytic performance evaluation result shows that in the reaction of preparing lactic acid by catalyzing dihydroxyacetone by using the catalyst prepared in the example 6, the conversion rate of dihydroxyacetone reaches 100% at 40min, the methylglyoxal yield reaches 63.83% at 15min, and the lactic acid yield reaches 50-51% at 60 min.
It should be noted that the above-described embodiments are only for explaining the present invention and do not constitute any limitation of the present invention. The invention has been described with reference to exemplary embodiments, but it is understood that the words which have been used are words of description and illustration, rather than words of limitation. Modifications may be made to the invention as defined in the appended claims, and the invention may be modified without departing from the scope and spirit of the invention. Although the invention is described herein with reference to particular means, materials and embodiments, the invention is not intended to be limited to the particulars disclosed herein, as the invention extends to all other means and applications which perform the same function.
Claims (17)
1. A method of preparing a tin/tantalum bimetallic oxide catalyst comprising the steps of:
s1, mixing a potassium tantalate solution with a template agent solution to obtain a mixed solution, mixing the mixed solution with a tin tetrachloride solution, and heating to obtain a mixture;
s2, crystallizing the mixture to obtain a catalyst precursor;
and S3, drying the catalyst precursor and roasting to obtain the tin/tantalum bimetallic oxide catalyst.
2. The method of claim 1, wherein the volume ratio of the potassium tantalate solution to the template solution is 1 (0.5-5).
3. The method according to claim 1, wherein the mixture is heated prior to mixing with the tin tetrachloride solution.
4. The method according to claim 1, wherein the mixed solution is heated and stirred at 35 to 55 ℃ for 15 to 45 minutes before being mixed with the tin tetrachloride solution.
5. The method according to claim 1, wherein in step S1, the heating conditions are: heating and stirring for 1-5 h at 35-55 ℃, then heating to 70-90 ℃ and continuing heating and stirring for 1-3 h.
6. The method according to any one of claims 1 to 5, wherein the preparation method of the potassium tantalate solution comprises the steps of:
t1, mixing and grinding tantalum oxide and potassium hydroxide to obtain a mixture;
and T2, roasting the mixture, cooling, and dissolving in water to obtain the potassium tantalate solution.
7. The method of claim 6, wherein in step T1, the molar ratio of tantalum oxide to potassium hydroxide is 1 (8-12); and/or
In the step T2, the roasting temperature is 400-600 ℃, and the roasting time is 5-8 h.
8. The method according to any one of claims 1 to 5, wherein the concentration of the potassium tantalate solution is 0.01mol/L to 0.1mol/L; and/or
The concentration of the stannic chloride solution is 0.1 mol/L-5 mol/L; and/or
The concentration of the template agent solution is 20g/L-30 g/L.
9. The method according to any one of claims 1 to 5, wherein the volume ratio of the tin tetrachloride solution to the potassium tantalate solution is (1:5) - (5:1).
10. The method of claim 8, wherein the volume ratio of the tin tetrachloride solution to the potassium tantalate solution is (1:5) - (5:1).
11. The method according to any one of claims 1 to 5, wherein in step S2, the crystallization temperature is 120 to 180 ℃ and the crystallization time is 0.5 to 3d; and/or
In the step S3, the roasting temperature is 300-650 ℃ and the roasting time is 2-8 h.
12. The method according to claim 8, wherein in step S2, the crystallization temperature is 120-180 ℃ and the crystallization time is 0.5-3 d; and/or
In the step S3, the roasting temperature is 300-650 ℃ and the roasting time is 2-8 h.
13. The process according to any one of claims 1 to 5, wherein a tin/tantalum bimetallic oxide catalyst is produced having a tin to tantalum molar ratio of (0.5 to 15): 1.
14. The process of claim 8 wherein the tin/tantalum bimetallic oxide catalyst is prepared with a tin to tantalum molar ratio of from (0.5 to 15): 1.
15. A method for catalyzing dihydroxyacetone to prepare lactic acid, which comprises the step of contacting dihydroxyacetone with the catalyst prepared by the method of any one of claims 1-14, and obtaining a product containing lactic acid after reaction.
16. The method of claim 15, wherein the temperature of the reaction is 120-160 ℃.
17. The method according to claim 15 or 16, wherein the mass ratio of dihydroxyacetone to the catalyst is (1-5): 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910920054.2A CN112547041B (en) | 2019-09-26 | 2019-09-26 | Tin/tantalum bimetallic oxide catalyst and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910920054.2A CN112547041B (en) | 2019-09-26 | 2019-09-26 | Tin/tantalum bimetallic oxide catalyst and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112547041A CN112547041A (en) | 2021-03-26 |
| CN112547041B true CN112547041B (en) | 2023-07-21 |
Family
ID=75030331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910920054.2A Active CN112547041B (en) | 2019-09-26 | 2019-09-26 | Tin/tantalum bimetallic oxide catalyst and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112547041B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102477020A (en) * | 2010-11-29 | 2012-05-30 | 中国科学院大连化学物理研究所 | Method for preparing 5-hydroxymethyl furfural by catalysis of carbohydrate |
| CN107827727A (en) * | 2017-11-09 | 2018-03-23 | 中国科学院上海高等研究院 | The method that lactic acid is prepared using carbohydrate |
| CN108658747A (en) * | 2018-04-12 | 2018-10-16 | 贵州理工学院 | A kind of application of tungsten based solid acid in biomass carbohydrate prepares lactic acid and lactate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104387261B (en) * | 2014-11-07 | 2016-10-12 | 同济大学 | Modified beta molecular sieve catalyzed conversion biomass are the method for lactic acid |
-
2019
- 2019-09-26 CN CN201910920054.2A patent/CN112547041B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102477020A (en) * | 2010-11-29 | 2012-05-30 | 中国科学院大连化学物理研究所 | Method for preparing 5-hydroxymethyl furfural by catalysis of carbohydrate |
| CN107827727A (en) * | 2017-11-09 | 2018-03-23 | 中国科学院上海高等研究院 | The method that lactic acid is prepared using carbohydrate |
| CN108658747A (en) * | 2018-04-12 | 2018-10-16 | 贵州理工学院 | A kind of application of tungsten based solid acid in biomass carbohydrate prepares lactic acid and lactate |
Non-Patent Citations (2)
| Title |
|---|
| Tin modified Nb2O5 as an efficient solid acid catalyst for the catalytic conversion of triose sugars to lactic acid;Xincheng Wang,;《Catalysis Science & Technology》;20190301;第1669-1679页 * |
| 化学法异构葡萄糖研究进展;张志文等;《化学世界》;20130925(第09期);第60-66页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112547041A (en) | 2021-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104475138A (en) | Vanadium-phosphorus-zirconium-titanium composite oxide catalyst for synthesising acrylic acid (ester) as well as preparation method and application of vanadium-phosphorus-zirconium-titanium composite oxide catalyst | |
| CN106905271B (en) | A kind of preparation and application of the heterogeneous catalysis of mesoporous material containing MCM-41 | |
| CN110194730B (en) | Application of DUT-67(Zr) in preparation of methyl phenyl sulfoxide through photocatalytic oxidation of methyl phenyl sulfide | |
| CN106243344A (en) | A kind of epoxy radicals end capped polyether continuous open loop production technology | |
| CN109289926A (en) | Copper base metal organic backbone base crystalline-state catalyst, the preparation method and applications of carbonic ester are prepared for catalyzed conversion carbon dioxide | |
| CN110624531A (en) | Preparation method and application of bismuth titanate photocatalyst | |
| CN110152698B (en) | Metal oxide modified niobium phosphate catalyst, preparation method and application thereof | |
| CN111807947A (en) | Method for preparing lactic acid by catalytic conversion of carbohydrate | |
| CN112194687A (en) | Metal nickel complex with ether bond bridging type bipyridyl carboxylic acid as ligand, and synthesis method and photocatalytic application thereof | |
| CN106986351B (en) | A kind of synthetic method of titanium-silicon molecular sieve TS-1 and its application in propylene ring oxidation reaction | |
| CN112547041B (en) | Tin/tantalum bimetallic oxide catalyst and preparation method and application thereof | |
| CN113831222A (en) | Production method of binaphthol | |
| CN106699703A (en) | Method for preparing 5-hydroxymethylfurfural through catalyzing biomass sugar by zirconium phosphate-supported titanium dioxide | |
| CN111250074B (en) | Method for synthesizing MOF derivative semiconductor heterojunction material by solvothermal method | |
| CN104709919A (en) | Tin-containing molecular sieve with MWW topological structure and preparation and application thereof | |
| CN108772088A (en) | One kind being used for CO2The g-C of cycloaddition synthesizing annular carbonate3N4Catalyst and preparation method thereof | |
| CN107098802A (en) | The 2 alkyl-anthraquinone preparation methods based on Beta zeolites | |
| CN112961051A (en) | Method for purifying methyl 3-methoxypropionate | |
| CN103709010A (en) | Method for synthesizing cyclohexanol by reacting cyclohexene, carboxylic acid and water | |
| CN103242149A (en) | Method for selectively preparing acraldehyde and hydroxy-acetone | |
| CN107970912A (en) | A kind of Alpha's bismuth oxide/pucherite and preparation method | |
| CN100421796C (en) | Load type catalyst used for synthesizing glutaraldehyde by oxidation of cyclopentene | |
| CN110550658B (en) | Preparation method of bismuth titanate visible-light-driven photocatalyst and application of bismuth titanate visible-light-driven photocatalyst | |
| CN102633624B (en) | Method for preparing methylcinnamic acid | |
| CN113351253A (en) | Preparation method of MOF @ COF core-shell composite material with acid-base concerted catalysis function |
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 |