EP 2984037 A1 20160217 - METHOD FOR SYNTHESIZING HYDROCYANIC ACID FROM FORMAMIDE - CATALYST
Title (en)
METHOD FOR SYNTHESIZING HYDROCYANIC ACID FROM FORMAMIDE - CATALYST
Title (de)
VERFAHREN ZUR BLAUSÄURESYNTHESE AUS FORMAMID - KATALYSATOR
Title (fr)
PROCÉDÉ DE SYNTHÈSE D'ACIDE CYANHYDRIQUE À PARTIR DE FORMAMIDE EN PRÉSENCE D'UN CATALYSEUR
Publication
Application
Priority
- EP 13163130 A 20130410
- EP 2014057112 W 20140409
- EP 14718544 A 20140409
Abstract (en)
[origin: WO2014166975A1] The invention relates to a method for producing hydrocyanic acid by the thermolysis of gaseous formamide in a reactor in the presence of a catalyst, wherein a) the catalyst (i) is an aluminum oxide catalyst, containing - 90 to 100 wt%, preferably 99 to 100 wt%, of aluminum oxide as component A, - 0 to 10 wt%, preferably 0 to 1 wt%, of silicon dioxide as component B, and - 0 to at most 0.1 wt% of iron or compounds containing iron as component C, wherein the total sum of components A, B, and C is 100 wt%, and (ii) has a BET surface area, measured as per DIN ISO 9277 : 2003-05, of < 1 m2/g, and (iii) is tempered at temperatures of > 1400 °C for 1 to 30 h, preferably ≥ 1500 °C for 1 to 30 h, especially preferably at 1500 °C to 1800 °C for 2 to 10 h, and b) the reactor has an inner surface that is inert with respect to the thermolysis of formamide; and use of the catalyst in a method for producing hydrocyanic acid by the thermolysis of gaseous formamide in a reactor that has an inner surface that is inert with respect to the thermolysis of formamide.
IPC 8 full level
C01C 3/02 (2006.01); B01J 21/04 (2006.01); B01J 21/12 (2006.01); B01J 35/10 (2006.01)
CPC (source: EP US)
B01J 21/04 (2013.01 - EP US); B01J 21/12 (2013.01 - EP US); B01J 23/745 (2013.01 - EP US); B01J 35/612 (2024.01 - EP US); C01C 3/0204 (2013.01 - EP US)
Citation (search report)
See references of WO 2014166975A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2014166975 A1 20141016; BR 112015025843 A2 20170725; CN 105307978 A 20160203; EP 2984037 A1 20160217; JP 2016519644 A 20160707; MX 2015014279 A 20160928; RU 2015148000 A 20170515; US 2016052793 A1 20160225
DOCDB simple family (application)
EP 2014057112 W 20140409; BR 112015025843 A 20140409; CN 201480032881 A 20140409; EP 14718544 A 20140409; JP 2016506946 A 20140409; MX 2015014279 A 20140409; RU 2015148000 A 20140409; US 201414783314 A 20140409