GB222279A - An improved process for drying and coating porous materials for use as adsorbents and catalysts - Google Patents

An improved process for drying and coating porous materials for use as adsorbents and catalysts

Info

Publication number
GB222279A
GB222279A GB2088023A GB2088023A GB222279A GB 222279 A GB222279 A GB 222279A GB 2088023 A GB2088023 A GB 2088023A GB 2088023 A GB2088023 A GB 2088023A GB 222279 A GB222279 A GB 222279A
Authority
GB
United Kingdom
Prior art keywords
oil
gel
film
water
temperature
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
GB2088023A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2088023A priority Critical patent/GB222279A/en
Publication of GB222279A publication Critical patent/GB222279A/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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28095—Shape or type of pores, voids, channels, ducts
    • B01J20/28097—Shape or type of pores, voids, channels, ducts being coated, filled or plugged with specific compounds
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28047—Gels
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/3078—Thermal treatment, e.g. calcining or pyrolizing
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
    • B01J20/3204—Inorganic carriers, supports or substrates
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
    • 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
    • C01B33/113—Silicon oxides; Hydrates thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Fats And Perfumes (AREA)
  • Catalysts (AREA)

Abstract

The aqueous phase of finely-divided or porous materials for use as adsorbents or catalysts is removed by means of an oil or vapour which wets the surface of the material and replaces the water, excess of liquid then being removed by distillation &c. The invention may be applied to colloidal gels or gelatinous precipitates, and is described with reference to a gel of silicic acid. The gel is immersed in a bath consisting of an oil of the paraffin series which distills at a temperature above 200 DEG C., and the oil replaces the water in the pores of the gel. The bath is maintained at a temperature of about 150 DEG C., the water passing off as vapour. On heating the residual product, the excess oil is driven off and a film of oil covers the surfaces of the gel, thus preventing "ageing." The process may be carried out at a reduced pressure or the vapour of an oil distilling at 100 DEG or 150 DEG C., may be passed into a vessel packed with the gel and maintained at a temperature higher than the distilling temperature of the oil. Further heating decomposes the film, replacing it by a film of carbonaceous matter, or by employing an excess of air, the carbon may be entirely removed in gaseous form, the combustion annealing the interior of the material. An emulsifying agent such as wool grease or a soap with a heavy metal oxide as base may be added to the treating liquid in proportions not exceeding 5 per cent to assist the replacement of the water. The composition of the film may be varied. For instance, the coating film may contain nickel, copper, silver, &c., which improve the product when it is used for catalysis. In a modified process, a quantity of oil insufficient to fill the pores of the material is added to the material and a stream of dry gas such as air at a temperature of 120 DEG to 150 DEG C. is passed over the material. The water is removed and the oil creeps over the surface of the material.ALSO:The aqueous phase of finely-divided or porous materials for use as adsorbents or catalysts is removed by means of an oil or vapour which wets the surface of the material and replaces the water, excess of liquid then being removed by distillation &c. The invention may be applied to colloidal gels or gelatinous precipitates, and is described with reference to a gel of silicic acid. The gel is immersed in a bath consisting of an oil of the paraffin series which distils at a temperature above 200 DEG C., and the oil replaces the water in the pores of the gel. The bath is maintained at a temperature of about 150 DEG C., the water passing off as vapour. On heating the residual product, the excess oil is driven off and a film of oil covers the surfaces of the gel, thus preventing "ageing." The process may be carried out at a reduced pressure or the vapour of an oil distilling at 100 or 150 DEG C. may be passed into a vessel packed with the gel and maintained at a temperature higher than the distilling temperature of the oil. Further heating decomposes the film, replacing it by a film of carbonaceous matter, or by employing an excess of air, the carbon may be entirely removed in gaseous form, the combustion annealing the interior of the material. An emulsifying agent such as wool grease or a soap with a heavy metal oxide as base may be added to the treating liquid in proportions not exceeding 5 per cent to assist the replacement of the water. The composition of the film may be varied. For instance, the coating film may contain nickel, copper, silver, &c., which improve the product when it is used for catalysis. In a modified process, a quantity of oil insufficient to fill the pores of the material is added to the material and a stream of dry gas, such as air, at a temperature of 120 DEG to 150 DEG C. is passed over the material. The water is removed and the oil creeps over the surface of the material.
GB2088023A 1923-08-17 1923-08-17 An improved process for drying and coating porous materials for use as adsorbents and catalysts Expired GB222279A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2088023A GB222279A (en) 1923-08-17 1923-08-17 An improved process for drying and coating porous materials for use as adsorbents and catalysts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2088023A GB222279A (en) 1923-08-17 1923-08-17 An improved process for drying and coating porous materials for use as adsorbents and catalysts

Publications (1)

Publication Number Publication Date
GB222279A true GB222279A (en) 1924-10-02

Family

ID=10153299

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2088023A Expired GB222279A (en) 1923-08-17 1923-08-17 An improved process for drying and coating porous materials for use as adsorbents and catalysts

Country Status (1)

Country Link
GB (1) GB222279A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454941A (en) * 1944-02-25 1948-11-30 Standard Oil Dev Co Drying hydrogel catalysts by distilling with butanol
US2528767A (en) * 1945-09-14 1950-11-07 Socony Vacuum Oil Co Inc Process of drying inorganic oxide gels
US2532497A (en) * 1947-05-28 1950-12-05 Universal Oil Prod Co Preparation of inorganic oxide particles
US2584286A (en) * 1944-03-11 1952-02-05 Standard Oil Dev Co Preparation and drying of catalytic hydrogel beads

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454941A (en) * 1944-02-25 1948-11-30 Standard Oil Dev Co Drying hydrogel catalysts by distilling with butanol
US2584286A (en) * 1944-03-11 1952-02-05 Standard Oil Dev Co Preparation and drying of catalytic hydrogel beads
US2528767A (en) * 1945-09-14 1950-11-07 Socony Vacuum Oil Co Inc Process of drying inorganic oxide gels
US2532497A (en) * 1947-05-28 1950-12-05 Universal Oil Prod Co Preparation of inorganic oxide particles

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