GB1302223A - - Google Patents

Info

Publication number
GB1302223A
GB1302223A GB2627870A GB2627870A GB1302223A GB 1302223 A GB1302223 A GB 1302223A GB 2627870 A GB2627870 A GB 2627870A GB 2627870 A GB2627870 A GB 2627870A GB 1302223 A GB1302223 A GB 1302223A
Authority
GB
United Kingdom
Prior art keywords
spheres
cho
sol
oil bath
hcl
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
GB2627870A
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 filed Critical
Publication of GB1302223A publication Critical patent/GB1302223A/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
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
    • B01J21/04—Alumina

Abstract

1302223 Al 2 O 3 -CR 2 O 3 spheres UNIVERSAL OIL PRODUCTS CO 1 June 1970 [12 June 1969] 26278/70 Heading B1E [Also in Division C1] Al 2 O 3 -Cr 2 O 3 spheres are produced by (a) forming a Cr 2 O 3 sol by dissolving CrO 3 in HCl using .2-2 moles HCl per mole CrO 3 , and treating with a reducing agent, (b) forming an Al 2 O 3 sol by dissolving Al in aqueous HCl and/or AlCl 3 , (c) mixing the sols together with a substance which decomposes to give NH 3 , and dispersing the mixture as droplets in a hot oil bath, (d) aging the gel spheres at elevated temperature to decompose residual NH 3 precursor, and (e) washing, drying, and calcining the spheres. The reducing agent may be HCHO, CH 3 CHO, C 2 H 5 CHO, n- or iso- (C 3 H 7 CHO, HCOOH, CH 3 COOH, (COOH) 2 , or N 2 H 4 . The sol mixture preferably has an atomic ratio of metal to Cl of 1-2 and contains 8-20 wt. % metal. The NH 3 precursor may be hexamethylenetetraamine. The oil bath may be at 49-104‹C. Aging may be effected at 49-260‹C and 40-150 psig in the hot oil bath. Optionally followed by an NH 4 OH age. The washing water may contain NH 4 OH and/or NH 4 NO 3 . Drying may be effected at 93-316‹C and calcining at 427-760‹C. The spheres may contain 10-90% Cr 2 O 3 .
GB2627870A 1969-06-12 1970-06-01 Expired GB1302223A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83286269A 1969-06-12 1969-06-12

Publications (1)

Publication Number Publication Date
GB1302223A true GB1302223A (en) 1973-01-04

Family

ID=25262802

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2627870A Expired GB1302223A (en) 1969-06-12 1970-06-01

Country Status (10)

Country Link
BE (1) BE751665A (en)
CA (1) CA919153A (en)
DK (1) DK123571B (en)
ES (1) ES380656A1 (en)
FR (1) FR2050001A5 (en)
GB (1) GB1302223A (en)
LU (1) LU61112A1 (en)
NL (1) NL7008556A (en)
NO (1) NO125521B (en)
SE (1) SE363587B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116959A (en) * 1982-03-19 1983-10-05 Atomic Energy Authority Uk Materials suitable for use as thermal spraying powders
US4548832A (en) * 1982-03-19 1985-10-22 United Kingdom Atomic Energy Authority Materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116959A (en) * 1982-03-19 1983-10-05 Atomic Energy Authority Uk Materials suitable for use as thermal spraying powders
US4548832A (en) * 1982-03-19 1985-10-22 United Kingdom Atomic Energy Authority Materials

Also Published As

Publication number Publication date
CA919153A (en) 1973-01-16
DE2027787A1 (en) 1971-11-11
BE751665A (en) 1970-11-16
NO125521B (en) 1972-09-25
FR2050001A5 (en) 1971-03-26
NL7008556A (en) 1970-12-15
DE2027787B2 (en) 1975-10-23
ES380656A1 (en) 1972-10-16
DK123571B (en) 1972-07-10
SE363587B (en) 1974-01-28
LU61112A1 (en) 1970-08-12

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee