CN1095396C - Catalyst carrying inorganic potassium compound - Google Patents
Catalyst carrying inorganic potassium compound Download PDFInfo
- Publication number
- CN1095396C CN1095396C CN00118436A CN00118436A CN1095396C CN 1095396 C CN1095396 C CN 1095396C CN 00118436 A CN00118436 A CN 00118436A CN 00118436 A CN00118436 A CN 00118436A CN 1095396 C CN1095396 C CN 1095396C
- Authority
- CN
- China
- Prior art keywords
- potassium compound
- inorganic potassium
- catalyzer
- catalyst
- hours
- 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.)
- Expired - Fee Related
Links
Abstract
The present invention relates to a catalyst carrying an inorganic potassium compound, which is composed of 10 to 20% of inorganic potassium compound and 80 to 90% of metal oxide or activated carbon in weight percentage. A catalyst carrier is accelerated for 2 hours at the temperature of 400 DEG C, then the carrier is immersed in a water solution of the inorganic potassium compound according to the composition of the catalyst, the carrier and the water solution are pumped to be a vacuum state and statically placed for 24 hours, and the catalyst is obtained after the carrier and the water solution are dried at the temperature of 120 DEG C and are accelerated for 4 hours at the temperature of 550 DEG C. The catalyst of the present invention has the characteristics of simple preparation, less dosage, no pollution, higher activity and selectivity and repeated use; furthermore, the catalyst can be separated by filtration after the reaction is completed.
Description
The invention belongs to a kind of solid catalyst of the carrying inorganic potassium compound from methyl alcohol and propylene carbonate Synthesis of dimethyl carbonate.
As a kind of eco-friendly organic synthesis intermediate and gasoline dope, methylcarbonate (Dimethyl Carbonate is called for short DMC) synthetic be subjected in recent years paying attention to widely with using (Y.Ono., Appl.Catal.A:, 1997,155,133).Synthesizing DMC from propylene carbonate and methyl alcohol through transesterify, because process is simple, and can generate dibasic alcohol, thereby is competitive method (A.G.Shaikh, S.Sivaram, Chem.Rev., 1996,96,951).
Propylene carbonate (being called for short PC) is as follows with the methyl alcohol reaction formula:
In this reaction, much more general with (Jiang Qi etc., gas chemical industry, 1997,22 (5), 1) such as alkali metal hydroxide, carbonate, alkoxide as catalyzer.But, cause difficulty for the separation and the repeated use of catalyzer because of this reaction is a homogeneous reaction.
The purpose of this invention is to provide a kind of catalyzer from methyl alcohol and propylene carbonate Synthesis of dimethyl carbonate, this catalyzer is easy to separate from product.
Goal of the invention of the present invention be achieved in that adopt inorganic potassium compound be impregnated into burning, on the activated carbon, the weight percent of its catalyzer consists of:
Inorganic potassium compound 10-20%
Metal oxide or gac 80-90%
Aforesaid inorganic potassium compound is potassium hydroxide, saltpetre or salt of wormwood.
Aforesaid metal oxide is aluminum oxide, zinc oxide, zirconium white or calcium oxide.The specific surface area of aforesaid gac is a 700-1000 rice
2/ gram, particle diameter is less than 80 orders.
Preparation method of the present invention adopts pickling process, with support of the catalyst 400 ℃ of following roastings 2 hours, then by the composition of above-mentioned catalyzer with carrier impregnation in the aqueous solution of inorganic potassium compound, vacuumize, left standstill 24 hours, and, obtained catalyzer in 4 hours 550 ℃ of following roastings through 120 ℃ of dryings.
Catalyzer of the present invention and other catalyzer relatively have preparation simply, and catalyst levels is few, environmentally safe, and have characteristics such as higher activity and selectivity.After reaction finished, catalyzer obtained separating by filtration, and it is reusable.
Embodiments of the invention are as follows:
Embodiment 1
400 ℃ of following roastings 2 hours, is 10% by potassium hydroxide then with calcium oxide, and calcium oxide is that 90% composition (weight percent) is impregnated into calcium oxide in the aqueous solution of potassium hydroxide, vacuumize, left standstill 24 hours, and, obtained catalyzer in 4 hours at 550 ℃ of following calcination activations through 120 ℃ of dryings.Add methyl alcohol and propylene carbonate by certain mole proportioning in reaction vessel, the add-on of catalyzer is 4% of a reaction mixture weight, under agitation condition, is warming up to 120 ℃, 2 hours reaction times.Cooling, filtration make catalyzer separate with reaction solution, the reaction solution gas chromatographic analysis, and the productive rate of DMC is 29.6%, the transformation efficiency of PC is 33.7%.
Embodiment 2
400 ℃ of following roastings 2 hours, is 10% by salt of wormwood then with zinc oxide, and zinc oxide is 90% composition, makes catalyzer, and all the other are with embodiment 1, the reaction solution gas chromatographic analysis, and the productive rate of DMC is 39.2%, the transformation efficiency of PC is 43.4%.
Embodiment 3
400 ℃ of following roastings 2 hours, is 18% by saltpetre then with aluminum oxide, and aluminum oxide is 82% composition, makes catalyzer, and all the other are with embodiment 1, the reaction solution gas chromatographic analysis, and the productive rate of DMC is that the transformation efficiency of 32.6%PC is 37.5%.
Embodiment 4
400 ℃ of following roastings 2 hours, is 16% by potassium hydroxide then with zirconium white, and zirconium white is 84% composition, makes catalyzer, and all the other are with embodiment 1.Reaction solution gas chromatographic analysis, the productive rate of DMC are 36.4%, and the transformation efficiency of PC is 40.1%.
Embodiment 5
400 ℃ of following roastings 2 hours, is 20% by saltpetre then with gac, and gac is 80% composition, makes catalyzer, and all the other are with embodiment 1, the reaction solution gas chromatographic analysis, and the productive rate of DMC is 39.9%, the transformation efficiency of PC is 43.7%.
Claims (4)
1. the catalyzer of a carrying inorganic potassium compound is characterized in that the weight percent of catalyzer consists of:
Inorganic potassium compound 10-20%
Metal oxide or gac 80-90%.
2. the catalyzer of a kind of carrying inorganic potassium compound according to claim 1 is characterized in that described inorganic potassium compound is potassium hydroxide, saltpetre or salt of wormwood.
3. the catalyzer of a kind of carrying inorganic potassium compound according to claim 1 is characterized in that described metal oxide is aluminum oxide, zinc oxide, zirconium white or calcium oxide.
4. the catalyzer of a kind of carrying inorganic potassium compound according to claim 1, the specific surface area that it is characterized in that described gac is a 700-1000 rice
2/ gram, particle diameter is less than 80 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00118436A CN1095396C (en) | 2000-06-21 | 2000-06-21 | Catalyst carrying inorganic potassium compound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00118436A CN1095396C (en) | 2000-06-21 | 2000-06-21 | Catalyst carrying inorganic potassium compound |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1304791A CN1304791A (en) | 2001-07-25 |
| CN1095396C true CN1095396C (en) | 2002-12-04 |
Family
ID=4587216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00118436A Expired - Fee Related CN1095396C (en) | 2000-06-21 | 2000-06-21 | Catalyst carrying inorganic potassium compound |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1095396C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103664620B (en) * | 2012-09-03 | 2015-09-16 | 中国石油化工股份有限公司 | The preparation method of a kind of bis--terephthalate |
| CN104248944B (en) * | 2013-06-27 | 2016-09-28 | 中国石油化工股份有限公司 | For adsorbing cleanser of volatile oxidn and preparation method thereof in MTP tail gas |
| CN103752270B (en) * | 2014-01-24 | 2015-08-05 | 上海方纶新材料科技有限公司 | For the special-purpose activated charcoal that chlorine is separated with Oxygen Adsorption |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6157361A (en) * | 1984-07-27 | 1986-03-24 | Fujitsu Ltd | Platen for impact type dot printer |
| JPH049356A (en) * | 1990-04-27 | 1992-01-14 | Asahi Chem Ind Co Ltd | Production of dialkyl carbonate |
| CN1103862A (en) * | 1993-07-15 | 1995-06-21 | 拜尔公司 | Process for the preparation of dimethyl carbonate |
| CN1228358A (en) * | 1998-03-06 | 1999-09-15 | 中国科学院山西煤炭化学研究所 | Catalyst for synthetising dimethyl carbonate from methanol and propylidene carbonate |
| CN1242356A (en) * | 1998-07-20 | 2000-01-26 | 中国科学院山西煤炭化学研究所 | Method for producing dimethyl carbonate by direct synthesizing carbon dioxide and methanol |
-
2000
- 2000-06-21 CN CN00118436A patent/CN1095396C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6157361A (en) * | 1984-07-27 | 1986-03-24 | Fujitsu Ltd | Platen for impact type dot printer |
| JPH049356A (en) * | 1990-04-27 | 1992-01-14 | Asahi Chem Ind Co Ltd | Production of dialkyl carbonate |
| CN1103862A (en) * | 1993-07-15 | 1995-06-21 | 拜尔公司 | Process for the preparation of dimethyl carbonate |
| CN1228358A (en) * | 1998-03-06 | 1999-09-15 | 中国科学院山西煤炭化学研究所 | Catalyst for synthetising dimethyl carbonate from methanol and propylidene carbonate |
| CN1242356A (en) * | 1998-07-20 | 2000-01-26 | 中国科学院山西煤炭化学研究所 | Method for producing dimethyl carbonate by direct synthesizing carbon dioxide and methanol |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1304791A (en) | 2001-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Murugan et al. | Synthesis of diethyl carbonate from dimethyl carbonate and ethanol using KF/Al2O3 as an efficient solid base catalyst | |
| CN1082458A (en) | A kind of selection hydrogenation catalyst and purposes that contains the 3rd main group and the 8th family's metal | |
| BRPI0501601B1 (en) | PROCESS FOR TRANSESTERIFICATION OF VEGETABLE OR ANIMAL OILS IN A MEDIUM OF ZINC OR BISMUTE, TITANIUM AND ALUMINUM HYPEROGENIC CATALYZERS | |
| CN102302934A (en) | Novel auxiliary-modified catalyst for preparing methanol by catalytic hydrogenation of carbon dioxide and preparation method of catalyst | |
| CN101983765B (en) | Catalyst for preparing methyl alcohol by catalytic hydrogenation on assistant modified carbon dioxide and preparation method thereof | |
| Changmai et al. | Heterogeneous system in organic synthesis: A review | |
| WO2020192477A1 (en) | Catalyst and method for preparing isopentyl diol | |
| CN111468149A (en) | Novel biodiesel solid catalyst KF/Ca-Mg-Al-O and preparation method and application thereof | |
| CN1095396C (en) | Catalyst carrying inorganic potassium compound | |
| CN112206820B (en) | Composite metal oxide catalyst for preparing isobutyl isobutyrate by using isobutyraldehyde one-step method and preparation method thereof | |
| CN1142018C (en) | Catalyst carrying potassium oxide | |
| CN1274416C (en) | Composite oxide catalyst for preparing propylene by oxidative dehydrogenation of propane and preparation method thereof | |
| JP2934838B2 (en) | Catalyst for decomposing nitrous oxide and method for removing nitrous oxide | |
| CN100467124C (en) | Catalyst for producing isobutene by cracking methyl tert-butyl ether | |
| CN104829458A (en) | Synthetic method of di(glycol monoalkyl ether)terephthalate | |
| CN115055176A (en) | Supported double-component solid base catalyst, and preparation method and application thereof | |
| WO2004106270A1 (en) | Catalytic process for the preparation of isolongifolene | |
| US7132582B2 (en) | Catalytic process for the preparation of isolongifolene | |
| CN1526476A (en) | Catalyst for direct synthesis of methyl carbonate and its prepn | |
| WO2013108543A1 (en) | Method for producing olefin | |
| CN1074310C (en) | Catalyst for synthetising dimethyl carbonate from methanol and propylidene carbonate | |
| CN1041175C (en) | Catalyst prepared by particular preparation method and its use in process for preparing tertiary olefins from alkyl-tert-alkylethers | |
| CN104475110B (en) | Catalyst for preparing Guerbet alcohol and preparation method for catalyst for preparing Guerbet alcohol | |
| CN1151118C (en) | Catalyst of synthetic propylene and application thereof | |
| CN1240656C (en) | Method for gas catalytic synthesis of para-methyl methyl phenate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |