51 results about "Diisobutylketone" patented technology

The invention relates to a catalyst used for the condensation of acetone to prepare methyl isobutyl ketone and diisobutyl ketone, a preparation method and application thereof, in the field of acetone condensation catalysts. The catalyst for the condensation of acetone to prepare methyl isobutyl ketone and diisobutyl ketone comprises the following components in weight percent: (1) 2% to 25% copper or its oxide; (2) 8% ~35% zinc or its oxide; (3) 2%~40% cobalt or its oxide; (4) 1%~10% barium or its oxide; (5) 30%~80% aluminum oxide; (6) ) 1%~40% silicon dioxide; the catalyst of the present invention uses copper, zinc, cobalt, etc. as loading components, properly adjusts the balance of catalyst acidity and alkalinity and hydrogenation property, and prepares a suitable catalyst pore structure. When used at a lower reaction temperature, the conversion rate of acetate is very high, and there are few by-products, the product yield is high, and the subsequent separation energy consumption is low. After a long-term assessment, the catalyst showed ideal stability.

The invention relates to a method for separating zirconium and hafnium, which specifically comprises the following steps of: using the acidic water solution of a zirconium compound as a raw material, extracting hafnium in the material liquid into an organic phase by using diisobutyl ketone (DIBK) or the synergism of DIBK with a neutral phosphorous extracting agent or the synergism of DIBK with anacidic phosphorus-containing extracting agent, and washing and stripping the oganic phase to produce a hafnium-rich liquid such that the separation of zirconium and hafnium is realized; respectively precipitating the hafnium-rich liquid and the remaining organic phase by using ammonia water, and washing and roasting the precipitates to obtain atomic energy level zirconium oxide and hafnium oxide.In the technical method provided by the invention, low content of hafnium in zirconium hafnium is preferably extracted, and the method has simple process and high extraction efficiency. The extraction system used in the method reaches the same zirconium and hafnium separation performance to MIBK (Methyl Isobutyl Ketone) but has smaller water solubility, high boiling point and flashing point and smaller toxicity compared with MIBK, and the problems of great solvent loss, easy outbreak of fire, environmental pollution and the like in the MIBK extraction separation method are solved.