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1. WO2012057794 - LOW TEMPERATURE SULPHUR DIOXIDE OXIDATION CATALYST FOR SULFURIC ACID MANUFACTURE

Publication Number WO/2012/057794
Publication Date 03.05.2012
International Application No. PCT/US2010/054783
International Filing Date 29.10.2010
IPC
C01B 17/00 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
17Sulfur; Compounds thereof
C01B 17/79 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
17Sulfur; Compounds thereof
69Sulfur trioxide; Sulfuric acid
74Preparation
76by contact processes
78characterised by the catalyst used
79containing vanadium
B01J 23/22 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
23Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/113
16of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
20Vanadium, niobium or tantalum
22Vanadium
CPC
B01J 23/682
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
23Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
38of noble metals
54combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
66Silver or gold
68with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
682with vanadium, niobium, tantalum or polonium
B01J 27/055
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
27Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
02Sulfur, selenium or tellurium; Compounds thereof
053Sulfates
055with alkali metals, copper, gold or silver
B01J 35/006
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35Catalysts, in general, characterised by their form or physical properties
002Catalysts characterised by their physical properties
0046Physical properties of the active metal ingredient
006metal crystallite size
B01J 37/0009
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
0009Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
B01J 37/0201
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
02Impregnation, coating or precipitation
0201Impregnation
B01J 37/024
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
02Impregnation, coating or precipitation
024Multiple impregnation or coating
Applicants
  • TDA RESEARCH, INC. [US]/[US] (AllExceptUS)
  • SRINIVAS, Girish [US]/[US] (UsOnly)
  • GEBHARD, Steven, C. [US]/[US] (UsOnly)
Inventors
  • SRINIVAS, Girish
  • GEBHARD, Steven, C.
Agents
  • SULLIVAN, Sally, A.
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) LOW TEMPERATURE SULPHUR DIOXIDE OXIDATION CATALYST FOR SULFURIC ACID MANUFACTURE
(FR) CATALYSEUR D'OXYDATION À BASSE TEMPÉRATURE DU DIOXYDE DE SOUFRE UTILISÉ EN VUE DE LA PRODUCTION D'ACIDE SULFURIQUE
Abstract
(EN)
Improved catalysts for oxidation of sulfur dioxide which are alkali metal-promoted vanadium catalysts which are further promoted by gold. Improved methods employing such catalyst for oxidation of sulfur dioxide and for manufacture of sulfuric acid. Improved methods for multiple step oxidation of sulfur dioxide in which the last oxidation step is carried out employing improved catalysts of this invention at temperatures lower than 400°C.
(FR)
La présente invention concerne des catalyseurs améliorés servant à l'oxydation du dioxyde de soufre, qui sont des catalyseurs au vanadium dopés par un métal alcalin et à l'or. L'invention concerne également des procédés améliorés d'utilisation desdits catalyseurs en vue de l'oxydation du dioxyde de soufre et de la production d'acide sulfurique. L'invention concerne, en outre, des procédés améliorés d'oxydation en plusieurs étapes du dioxyde de soufre dans le cadre desquels la dernière étape d'oxydation est mise en œuvre au moyen des catalyseurs améliorés de la présente invention à des températures inférieures à 400 °C.
Also published as
Latest bibliographic data on file with the International Bureau