GB1067461A - Improvements in or relating to the manufacture of synthetic crystalline mordenite - Google Patents

Improvements in or relating to the manufacture of synthetic crystalline mordenite

Info

Publication number
GB1067461A
GB1067461A GB1765064A GB1765064A GB1067461A GB 1067461 A GB1067461 A GB 1067461A GB 1765064 A GB1765064 A GB 1765064A GB 1765064 A GB1765064 A GB 1765064A GB 1067461 A GB1067461 A GB 1067461A
Authority
GB
United Kingdom
Prior art keywords
mordenite
al2o3
relating
manufacture
gel
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
GB1765064A
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.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of GB1067461A publication Critical patent/GB1067461A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/08—Humidity
    • F26B21/083—Humidity by using sorbent or hygroscopic materials, e.g. chemical substances, molecular sieves
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
    • A23C15/00—Butter; Butter preparations; Making thereof
    • A23C15/18—Preservation
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
    • A23F5/00—Coffee; Coffee substitutes; Preparations thereof
    • A23F5/10—Treating roasted coffee; Preparations produced thereby
    • A23F5/105—Treating in vacuum or with inert or noble gases; Storing in gaseous atmosphere; Packaging
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
    • A23L3/3454—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of liquids or solids
    • A23L3/358—Inorganic compounds
    • 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
    • C01B33/28—Base exchange silicates, e.g. zeolites
    • C01B33/2807—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures
    • C01B33/2861—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures of mordenite type, e.g. ptilolite or dachiardite

Abstract

Crystalline mordenite is synthesized by deionizing at least to about 80% an alkali metal silicate solution using a cation exchange material in hydrogen form to form a deionized silica sol, mixing the sol directly or after concentration up to 30% silica with aqueous sodium aluminate and excess alkali to give pH 7.5 to 11 of the mother liquor after crystallization and thus forming a gel with ratio SiO2/Al2O3 of 8 : 1 to 14 : 1 and heating the gel at 250 DEG to 350 DEG C. under superatmospheric pressure for, e.g. 1 to 24 hours. The initial mixture of silica sol and sodium aluminate may contain a quantity of Na2O in the initial mixture such that the mol ratio Na2O/Al2O3 is greater than 1 but not greater than 2. The mordenite may be dehydrated at 300 DEG to 400 DEG C.
GB1765064A 1963-04-29 1964-04-28 Improvements in or relating to the manufacture of synthetic crystalline mordenite Expired GB1067461A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR933117A FR1369377A (en) 1963-04-29 1963-04-29 Crystalline mordenite manufacturing process

Publications (1)

Publication Number Publication Date
GB1067461A true GB1067461A (en) 1967-05-03

Family

ID=8802693

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1765064A Expired GB1067461A (en) 1963-04-29 1964-04-28 Improvements in or relating to the manufacture of synthetic crystalline mordenite

Country Status (5)

Country Link
BE (1) BE646840A (en)
DE (1) DE1245930B (en)
FR (1) FR1369377A (en)
GB (1) GB1067461A (en)
NL (1) NL6404638A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1167535A (en) * 1966-09-14 1969-10-15 British Petroleum Co Improvements relating to the preparation of Mordenite
JPS5470457A (en) * 1977-11-07 1979-06-06 Takeda Chemical Industries Ltd Preservation of fresheness of fruit and vegetables

Also Published As

Publication number Publication date
DE1245930B (en) 1967-08-03
NL6404638A (en) 1964-10-30
BE646840A (en) 1964-10-21
FR1369377A (en) 1964-08-14

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