LU102403B1 - A method for preparing diol by auto-producing hydrogen and auto-hydrogenating at low temperature - Google Patents
A method for preparing diol by auto-producing hydrogen and auto-hydrogenating at low temperature Download PDFInfo
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- LU102403B1 LU102403B1 LU102403A LU102403A LU102403B1 LU 102403 B1 LU102403 B1 LU 102403B1 LU 102403 A LU102403 A LU 102403A LU 102403 A LU102403 A LU 102403A LU 102403 B1 LU102403 B1 LU 102403B1
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- auto
- reaction substrate
- catalyst
- hydrogenating
- producing hydrogen
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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
- 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
- B01J23/48—Silver or gold
- B01J23/52—Gold
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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
- 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
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
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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
- 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
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/44—Palladium
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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
- 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
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/46—Ruthenium, rhodium, osmium or iridium
- B01J23/462—Ruthenium
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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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
- B01J23/8913—Cobalt and noble metals
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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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
- B01J23/8926—Copper and noble metals
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/60—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by elimination of -OH groups, e.g. by dehydration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
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- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a method for preparing diol by auto-producing hydrogen and auto-hydrogenating at low temperature, which comprises the following steps: (1) The molar ratio of metal catalyst to reaction substrate is 1:50 to 1: 200; (2) The operating temperature is 120~240°C; (3) The operating pressure is 80 times of the nitrogen pressure of the standard atmospheric pressure; (4) The mass fraction of the reaction substrate in the solution is 1~55%; (5) The contact time between reaction substrate and catalyst is about 0.5~48 hours; (6) The technological process can be intermittent or continuous. The invention has a simple and convenient preparation process, good preparation effect and high working efficiency.
Description
Description A method for preparing diol by auto-producing hydrogen and auto-hydrogenating at low temperature
TECHNICAL FIELD The invention is related to a method for preparing diol by auto-producing hydrogen and auto-hydrogenating at low temperature.
BACKGROUND Diol is a very important chemical raw material and an important precursor for preparing plastics and other materials. At present, bulk diol products such as 1,2- propanediol and ethylene diol mainly adopt fossil fuels as raw materials, which are processed by dehydrogenation, oxidation and hydrolysis at high temperature. The energy consumption of these products is very high, while the product yield in the process is very low. In additon, it also causes serious pollution to the environment. In recent years, one-step synthesis of dihydric alcohol is available by using biomass as raw material, but its process usually entails high operating temperature and hydrogen pressure. The main problem of the process is that the side effects are very serious due to the harsh operation conditions. At the same time, the use of high-pressure hydrogen poses a great hidden danger to the safety of the process.
SUMMARY The method for preparing diol by auto-producing hydrogen and auto-hydrogenating at low temperature comprises the following steps: 1
1) The reaction substrates are cellulose, disaccharides, sorbitol, xylitol and glycerol, and also include alcohols and acids with 1 to 4 carbons; 2) The molar ratio of metal catalyst to reaction substrate is 1:50 to 1: 200; 3) The operating temperature is 120~240°C; 4) The operating pressure is 80 times of the nitrogen pressure of the standard atmospheric pressure; 5) The mass fraction of the reaction substrate in the solution is 1~55%; 6) The contact time between reaction substrate and catalyst is about 0.5~48 hours; 7) The technological process can be intermittent or continuous; The metal catalysts include monometallic of Pt, Au, Ru, and Pd; As bimetallic catalysts include PtCu, PtNi, PtFe, PtCo, PtMn, PtRu, AuCu, AuCo, AuNi, AuMn, PdCu, PdCo, PdNi, RuCu, RuNi, RuCo, and PdRu.
After adopting the above steps, the invention will have the beneficial effect as follows: The invention has a simple and convenient preparation process, good preparation effect and high working efficiency.
DESCRIPTION OF THE INVENTION In order to make the object, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail with reference to specific 2 examples. It is to be understood that the examples described herein are used only to explain the invention, and are not intended to limit the invention.
1. Experiment of auto-producing hydrogen and auto-hydrogenating of glycerol Table 1. Reaction results of auto-producing hydrogen and auto-hydrogenating of glycerol Conte T nt of Conver Propyle | Ethyle ; Alcoh | Gaseous Catalyzer cataly -sion ne ne | Acids ols | product (°C) 9 zer (g) rate(%) | glycol | glycol me [mue [sw je 0 [mv JT lL I CO LA cr jo fous Jw Ju fm jo [fo] The numbers in brackets represent metal loading, for example, Pt(5)/C: 5w% of Pt content, with C carrier. The reaction conditions: 1g of glycerol, 0.2g of NaOH and H2O are taken as solvent, with the total reaction volume is 50 mL, 10 bar of N as the pressure, and 6h for the reaction time.
2. Experiment of auto-producing hydrogen and auto-hydrogenating of sorbitol Table 2. Reaction results of auto-producing hydrogen and auto-hydrogenating of sorbitol 3
Content Prop Ethvle Gaseo T of Conversio y y Acid | Alcohol us Catalyzer ° lene ne (°C) catalyzer | n rate(%) glyc | glycol Ss s produc (g) ol t CE 160 fous Jw Jao Ju a 0 c so fous Jw au [m Ju foo | co 120 fous Jo fa fa Jie 9 fo so [ons Jw fw Ju f= fo fo | The numbers in brackets represent metal loading, for example, Pt(5)/C: 5w% of Pt content, with C carrier. The reaction conditions: 1g of sorbitol, 0.2g of NaOH and H2O are taken as solvent, with the total reaction volume is 50 mL, 10 bar of N as the pressure, and 6h for the reaction time.
For those skilled in the art, it is obvious that the present invention is not limited to the details of the foregoing exemplary examples, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the examples should be regarded as exemplary but not limited. The scope of the present invention is defined by the appended claims rather 4 than the above description, so it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the invention.
It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary examples, and that the present invention can be realized in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, the examples should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to embrace all changes falling within the meaning and range of equivalent elements of the claims.
In addition, it should be understood that although this specification is described according to examples, each embodiment does not contain only one independent technical solution. The description of this specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole. The technical solutions in each embodiment can also be combined appropriately to form other examples that can be understood by those skilled in the art.
Claims (3)
1. The method for preparing diol by auto-producing hydrogen and auto-hydrogenating at low temperature comprises the following steps: 1) the reaction substrates are cellulose, disaccharides, sorbitol, xylitol and glycerol, and also include alcohols and acids with 1 to 4 carbons; 2) the molar ratio of metal catalyst to reaction substrate is 1:50 to 1: 200; 3) the operating temperature is 120~240°C; 4) the operating pressure is 80 times of the nitrogen pressure of the standard atmospheric pressure; 5) the mass fraction of the reaction substrate in the solution is 1~55%; 6) the contact time between reaction substrate and catalyst is about 0.5~48 hours; 7) the technological process can be intermittent or continuous;
2. Method according to claim 1, wherein the metal catalysts include monometallic of Pt, Au, Ru, and Pd; as bimetallic catalysts include PtCu, PtNi, PtFe, PtCo, PtMn, PtRu, AuCu, AuCo, AuNi, AuMn, PdCu, PdCo, PdNi, RuCu, RuNi, RuCo, and PdRu.
3. Method according to claim 2, further comprising the step of preparing the bimetallic catalyst according to the catalyst of claim 2. 6
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU102403A LU102403B1 (en) | 2021-01-12 | 2021-01-12 | A method for preparing diol by auto-producing hydrogen and auto-hydrogenating at low temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU102403A LU102403B1 (en) | 2021-01-12 | 2021-01-12 | A method for preparing diol by auto-producing hydrogen and auto-hydrogenating at low temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU102403B1 true LU102403B1 (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU102403A LU102403B1 (en) | 2021-01-12 | 2021-01-12 | A method for preparing diol by auto-producing hydrogen and auto-hydrogenating at low temperature |
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| Country | Link |
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| LU (1) | LU102403B1 (en) |
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2021
- 2021-01-12 LU LU102403A patent/LU102403B1/en active IP Right Grant
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Effective date: 20210803 |