Classifications

• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
  • C01B17/00—Sulfur; Compounds thereof
  • C01B17/69—Sulfur trioxide; Sulfuric acid
  • C01B17/74—Preparation
  • C01B17/76—Preparation by contact processes
  • C01B17/78—Preparation by contact processes characterised by the catalyst used
• • 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
  • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
  • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
  • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
  • B01J23/78—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with alkali- or alkaline earth metals
• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
  • C01B17/00—Sulfur; Compounds thereof
  • C01B17/48—Sulfur dioxide; Sulfurous acid
  • C01B17/50—Preparation of sulfur dioxide
  • C01B17/501—Preparation of sulfur dioxide by reduction of sulfur compounds
  • C01B17/502—Preparation of sulfur dioxide by reduction of sulfur compounds of sulfur trioxide
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
  • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
  • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Materials Engineering (AREA)
• Inorganic Chemistry (AREA)
• Catalysts (AREA)
• Exhaust Gas Treatment By Means Of Catalyst (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=9170268

Family Applications (1)

Country Status (14)

Families Citing this family (1)

Family Cites Families (1)

• 1976
  • 1976-03-11 FR FR7606974A patent/FR2343694A1/fr active Granted
• 1977
  • 1977-02-18 BE BE1007962A patent/BE851638A/xx not_active IP Right Cessation
  • 1977-02-23 JP JP52018284A patent/JPS6035175B2/ja not_active Expired
  • 1977-03-02 IT IT67457/77A patent/IT1073280B/it active
  • 1977-03-08 GB GB9738/77A patent/GB1572841A/en not_active Expired
  • 1977-03-09 CA CA273,537A patent/CA1093541A/fr not_active Expired
  • 1977-03-10 BR BR7701470A patent/BR7701470A/pt unknown
  • 1977-03-10 SU SU772459849A patent/SU745353A3/ru active
  • 1977-03-10 CH CH304477A patent/CH597908A5/xx not_active IP Right Cessation
  • 1977-03-10 ZA ZA00771453A patent/ZA771453B/xx unknown
  • 1977-03-10 AU AU23104/77A patent/AU517001B2/en not_active Expired
  • 1977-03-10 DE DE2710350A patent/DE2710350C3/de not_active Expired
  • 1977-03-11 AT AT165677A patent/AT351495B/de not_active IP Right Cessation
  • 1977-03-11 ES ES456781A patent/ES456781A1/es not_active Expired

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