12- CATALYSTS FOR OXYCHLORINATION OF ETHYLENE TO 12-DICHLOROETHANE

• Main Authors: CAVALLI LUIGI, CASAGRANDE FRANCESCO
• Format: Patent
• Language: English; Korean
• Published: 09.05.2003
• Edition: 7
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; APPARATUS THEREFOR; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; GENERAL METHODS OF ORGANIC CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

PURPOSE: Catalysts for the oxychlorination of ethylene to dichloroethane (DCE) capable of providing high conversion rates without sacrificing selectivity by working in a fluid bed at high temperatures are provided, and a process in which the catalysts are used is provided. CONSTITUTION: The catalysts for the oxychlorination of ethylene to 1,2-dichloroethane comprise compounds of Cu and Mg supported on alumina and having a copper content, expressed as Cu, of 2 to 8% by weight, wherein the Mg/Cu atomic ratio is from 1.2 to 2.5, with distribution of the copper atoms more inside the particle of the catalyst than on the surface (layer with a thickness of 20-30 Å) and of the magnesium atoms more on the surface(20-30 Å layer) than inside the particle, and in that the specific surface of the catalyst is from 30 to 130 m¬2/g, and wherein the Mg/Cu ratio is from 1.3 to 2 and the distribution of the copper atoms is such that the X/Y ratio is from 1.2 to 2.7 (X is the Al/Cu ratio at the surface and Y is the Al/Cu ratio within the particle of the catalyst) and the distribution of the magnesium atoms is such that the V/Z ratio is from 1.5 to 3 (V is the Al/Mg ratio within the particle of the catalyst, Z is the Al/Mg ratio at the surface). 본 발명은 2 내지 8 중량%의 Cu 함량을 갖는 알루미나 상에 담지된 Cu 및 Mg의 화합물을 포함하고, Mg/Cu의 원자비가 1.2 내지 2.5이고, 촉매의 비표면이 30 내지 130 m/g인 에틸렌의 1,2-디클로로에틸렌으로의 옥시염소화용 촉매에 관한 것이다.