METHOD FOR PRODUCTION OF IRON-POTASSIUM CATALYST FOR DEHYDROGENATION OF METHYLBUTENES, CATALYST PRODUCED BY THIS METHOD AND METHOD FOR METHYLBUTENE DEHYDROGENATION USING THIS CATALYST Russian patent published in 2017 - IPC C07C5/32 C07C11/18 B01J38/00 B01J37/04 B01J23/04 B01J23/10 B01J23/745 B01J23/78 B01J23/88 

FIELD: chemistry.

SUBSTANCE: invention refers to a method for production of iron-potassium catalysts for methylbutene dehydrogenation to isoprene. A method for production of iron-potassium catalyst for methybutene dehydrogenation is carried out as follows: catalyst components are mixed in the following ratio, wt.%: magnesium oxide 0.5÷10, potassium compounds 5÷30, calcium carbonate 1÷10, cerium compounds with reference to dioxide 5÷20 and molybdenum compounds with reference to trioxide 0.5-5, iron (3) oxide being the rest, the obtained catalyst mass with moisture content of 10-16% is formed, dried at a temperature of 100÷120°C and ignited at a temperature of 650÷850°C. The method is characterized by the fact that waste catalyst for methybutene dehydrogenation ground and fractioned to 0.2 mm is taken as a component of the catalyst mass; before production of the catalyst mass the composition of waste catalyst is determined preliminary, determination includes assessment of the quantity of lacking components of above mentioned ones which are added to the catalyst mass at mixing stage, then forming is carried out, while taking waste catalyst in the quantity of 5÷70 wt% of total catalyst weight. An iron-potassium catalyst and method for methylbutene dehydrogenation are also claimed.

EFFECT: catalyst regeneration in the production cycle for methylbutene dehydrogenation with increased or preserved catalyst activity, selectivity and with lower consumption of initial components.

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