GB927535A - Process of forming pellets - Google Patents
Process of forming pelletsInfo
- Publication number
- GB927535A GB927535A GB717360A GB717360A GB927535A GB 927535 A GB927535 A GB 927535A GB 717360 A GB717360 A GB 717360A GB 717360 A GB717360 A GB 717360A GB 927535 A GB927535 A GB 927535A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pellets
- polyvinyl alcohol
- polyvinyl
- alumina
- forming pellets
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0018—Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat)
-
- 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
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/22—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by pressing in moulds or between rollers
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Catalysts (AREA)
Abstract
Refractory inorganic oxide pellets are formed with 0,5-6% of a polyvinyl compound as binding agent and die lubricant and the formed pellets are then heated to above 500 DEG C. thereby removing the polyvinyl compound. Reference is made to polyvinyl alcohol, acetal and esters. The examples are confined to forming alumina pellets with polyvinyl alcohol additive and comparison is made with similar pellets containing hydrogenated cottonseed oil. The alumina may contain 30-60% of the trihydrate and the pellets may be used as a catalyst carrier. Reference is made to oxides of Si, Zr, Th, Ti and B and impregnation with Pt, Pd, Ir, Fe, Co, Ni, Mo, Cd, Mg, Na and K is mentioned.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB717360A GB927535A (en) | 1960-03-01 | 1960-03-01 | Process of forming pellets |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB717360A GB927535A (en) | 1960-03-01 | 1960-03-01 | Process of forming pellets |
Publications (1)
Publication Number | Publication Date |
---|---|
GB927535A true GB927535A (en) | 1963-05-29 |
Family
ID=9828021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB717360A Expired GB927535A (en) | 1960-03-01 | 1960-03-01 | Process of forming pellets |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB927535A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0072390A2 (en) * | 1981-08-19 | 1983-02-23 | Degussa Aktiengesellschaft | Process for the preparation of moulded articles from pyrogenically prepared oxides |
-
1960
- 1960-03-01 GB GB717360A patent/GB927535A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0072390A2 (en) * | 1981-08-19 | 1983-02-23 | Degussa Aktiengesellschaft | Process for the preparation of moulded articles from pyrogenically prepared oxides |
DE3132674A1 (en) * | 1981-08-19 | 1983-03-17 | Degussa Ag, 6000 Frankfurt | METHOD FOR PRODUCING PRESSELINGS FROM PYROGEN-PRODUCED OXIDS |
EP0072390A3 (en) * | 1981-08-19 | 1984-08-01 | Degussa Aktiengesellschaft | Process for the preparation of moulded articles from pyrogenically prepared oxides |
US4482642A (en) * | 1981-08-19 | 1984-11-13 | Degussa Aktiengesellschaft | Process for the production of slugs of pyrogenically produced oxides |
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