GB743367A - Improvements in or relating to molybdena hydrosols - Google Patents
Improvements in or relating to molybdena hydrosolsInfo
- Publication number
- GB743367A GB743367A GB2244853A GB2244853A GB743367A GB 743367 A GB743367 A GB 743367A GB 2244853 A GB2244853 A GB 2244853A GB 2244853 A GB2244853 A GB 2244853A GB 743367 A GB743367 A GB 743367A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydrosol
- molybdena
- solution
- molybdate
- alumina
- 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
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
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/28—Molybdenum
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G39/00—Compounds of molybdenum
- C01G39/003—Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic 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
A concentrated molybdena hydrosol containing 40-300 grams molybdena per litre and having a pH of from 0.1 to 1.4 is prepared by contacting an aqueous solution of a molybdate with an acid-washed synthetic cation-exchanging resin. Solutions of ammonium, sodium, or potassium molybdate may be employed. Air drying of the hydrosol yields a glassy, horny, amorphous mass. In examples, ammonium molybdate solution is passed downwardly through a bed of the resin to form a blue hydrosol; the addition of hydrogen peroxide to the molybdate solution maintains the molybdenum in its higher valency and provides an orange-yellow hydrosol; the solubility of ammonium molybdate may be increased by adding ammonia to the original solution. Tables are given showing the pH, specific gravity, and MoO3 content of various hydrosol fractions. The hydrosols may be used to prepare hydroforming catalysts as follows (a) by mixing the molybdena hydrosol with alumina hydrosol, with or without silica hydrosol, and oven or spray drying the product (b) by impregnating wet or dry alumina, which may contain silica, with the molybdena hydrosol. The alumina hydrosol may be formed by hydrolysis of an aluminium alcoholate; alumina of wide bore diameter is formed by hydrolizing aluminium amylate solution with a 1 per cent solution of hydrogen fluoride, filtering, pelleting, and steaming the product. Specification 645,703 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2244853A GB743367A (en) | 1953-08-14 | 1953-08-14 | Improvements in or relating to molybdena hydrosols |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2244853A GB743367A (en) | 1953-08-14 | 1953-08-14 | Improvements in or relating to molybdena hydrosols |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB743367A true GB743367A (en) | 1956-01-11 |
Family
ID=10179514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2244853A Expired GB743367A (en) | 1953-08-14 | 1953-08-14 | Improvements in or relating to molybdena hydrosols |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB743367A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2472030A1 (en) * | 1979-12-19 | 1981-06-26 | Euteco Impianti Spa | |
| CN111777100A (en) * | 2020-06-28 | 2020-10-16 | 四川硅迪新材料有限公司 | Modified molybdenum trioxide sol and preparation method thereof |
-
1953
- 1953-08-14 GB GB2244853A patent/GB743367A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2472030A1 (en) * | 1979-12-19 | 1981-06-26 | Euteco Impianti Spa | |
| DK155020B (en) * | 1979-12-19 | 1989-01-23 | Euteco Impianti Spa | PROCEDURE FOR RECOVERING MOLYBDA IN THE FORM OF Aqueous SOLUTION OF PURE MOLYBDAIC ACID FROM MOLYBDA-CONTAINING CATALYSTS |
| CN111777100A (en) * | 2020-06-28 | 2020-10-16 | 四川硅迪新材料有限公司 | Modified molybdenum trioxide sol and preparation method thereof |
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