GB644322A - Improvements in or relating to the manufacture of inorganic hydrous oxide gels, suchas silica gels, in microspheroidal form - Google Patents

Improvements in or relating to the manufacture of inorganic hydrous oxide gels, suchas silica gels, in microspheroidal form

Info

Publication number
GB644322A
GB644322A GB17674/47A GB1767447A GB644322A GB 644322 A GB644322 A GB 644322A GB 17674/47 A GB17674/47 A GB 17674/47A GB 1767447 A GB1767447 A GB 1767447A GB 644322 A GB644322 A GB 644322A
Authority
GB
United Kingdom
Prior art keywords
slurry
gels
gel
hydrous oxide
water
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
Application number
GB17674/47A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by American Cyanamid Co filed Critical American Cyanamid Co
Publication of GB644322A publication Critical patent/GB644322A/en
Expired legal-status Critical Current

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
    • B01J37/0027—Powdering
    • B01J37/0045—Drying a slurry, e.g. spray drying
    • 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
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/12—Silica and alumina
    • 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
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/14—Silica and magnesia
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/20—Silicates
    • C01B33/26—Aluminium-containing silicates, i.e. silico-aluminates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)

Abstract

<PICT:0644322/III/1> Microspheroidal inorganic hydrous oxide gels are made by preparing an aqueous slurry consisting of 3-6 per cent of the hydrous oxide gel in water containing soluble alkali metal salts, filtering the slurry and washing the filter cake, reforming a slurry of the filter cake in water to give a content of 3.5-8.8 per cent by weight of the gel, spraying the slurry into a current of hot gases at a temperature of at least 600 DEG F., and preferably up to 1200 DEG F., and maintaining the particles suspended in the gas stream while the free water of the slurry is evaporated. The slurries, preferably made by the process outlined in Fig. 1 (not shown), and disclosed in Specification 626,455, are passed into a shell 42 and pumped on to a revolving vaned wheel 44 from which small particles of gel are thrown into a cylinder and descend in a helical path caused by the swirling motion of hot gases introduced through ducts 36, 38, manifold 37, cone 39 and vanes 40. The gases containing the dried gel pass out of a conical bottom 32, having a lower detachable portion, into cyclone separators. Gels specified are those containing an oxide of Si, Fe, Al, V, Cu, Ni, Ti, Th, Mn, Cr, Zr or Mg or any two or more of these oxides. They may be used as catalysts, particularly in fluidized form, in cracking, dehydrating, hydrogenating, dehydrogenating or reduction processes or for synthesizing hydrocarbons or alcohols or they may be used as absorbents, e.g. for dehumidifying.
GB17674/47A 1946-08-23 1947-07-04 Improvements in or relating to the manufacture of inorganic hydrous oxide gels, suchas silica gels, in microspheroidal form Expired GB644322A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US644322XA 1946-08-23 1946-08-23

Publications (1)

Publication Number Publication Date
GB644322A true GB644322A (en) 1950-10-11

Family

ID=22055932

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17674/47A Expired GB644322A (en) 1946-08-23 1947-07-04 Improvements in or relating to the manufacture of inorganic hydrous oxide gels, suchas silica gels, in microspheroidal form

Country Status (1)

Country Link
GB (1) GB644322A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768145A (en) * 1951-01-12 1956-10-23 Grace W R & Co Method of manufacturing silica alumina catalyst
US2819229A (en) * 1953-12-23 1958-01-07 Standard Oil Co Preparation of microsphere chromiaalumina catalyst
US2831652A (en) * 1954-11-24 1958-04-22 American Cyanamid Co Production of microspheroidal catalysts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768145A (en) * 1951-01-12 1956-10-23 Grace W R & Co Method of manufacturing silica alumina catalyst
US2819229A (en) * 1953-12-23 1958-01-07 Standard Oil Co Preparation of microsphere chromiaalumina catalyst
US2831652A (en) * 1954-11-24 1958-04-22 American Cyanamid Co Production of microspheroidal catalysts

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