51 results about "Diisobutylketone" patented technology

An improved method for the manufacture of MIBK and DIBK from DMK and / or IPA, by reacting, in the presence of an aldol condensation catalyst, a gaseous mixture comprising hydrogen and DMK and / or IPA. The improvement is the use of a reaction pressure greater than 207 kPa (30 psig) to increase the ratio of MIBK to DIBK. In addition a method for the manufacture of MIBK and DIBK by reacting, in the presence of an aldol condensation catalyst, a gaseous mixture consisting essentially of DMK and / or IPA and optionally water.

The invention relates to a method for synthesizing methyl isobutyl ketone and diisobutyl ketone by an acetone gas-phase one-step method, which relates to a chemical solvent. A Pd / MgO-Al2O3-ZrO2 catalyst is used in the method, comprises the components of 1wt% of Pd, 55wt% of MgO, 10wt% of Al2O3 and 34wt% of ZrO2 and is prepared from a PdMgAlZr four-element houghite compound. under the condition that the reaction temperature is 150-200 DEG C,the liquid air speed is 4.8ml / gcat.h, and the hydrogen-ketone mol ratio is 1, in a fixed bed reactor, the acetone conversion rate is 30-73 percent, and theselectivity of the methyl isobutyl ketone and the diisobutyl ketone respectively reaches 50-60 percent and 23-30 percent. The catalyst has simple preparation process and is suitable for large-scale production. After the ZrO2 is added, the catalyst has proper acid-base property and higher activity. The catalyst can be simultaneously used for preparing the two products of the methyl isobutyl ketoneand the diisobutyl ketone.

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 present invention relates to a drag reducing agent, composition, compound, product, process and method of use for use in petroleum pipelines and the like. A preferred embodiment of the present invention provides a cryogenically-ground polyalphaolefin polymer at 15-25 wt. % of the commercial product formulation. The bulking agents comprise ethylene bis-stearamide alone or in combination with other polyethylene and / or polypropylene polymers at 2.0-5.0 wt. % of the commercial product formulation. In addition, diisobutyl ketone 20-60 wt. % of the commercial product formulation and propylene carbonate 2.8-8.4 wt. % of the commercial product formulation are used.

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.

The invention discloses a catalyst for synthesis of 2,6-dimethyl-4-heptanone from acetone and a preparation method for the catalyst. The catalyst comprises an active ingredient Ni and a carrier ZrO12-MnO2; based on the total weight of the catalyst, the content of the active ingredient Ni is 1 to 10 weight percent, preferably 3 to 6 weight percent, the content of MnO2 is 1 to 20 weight percent, preferably 5 to 10 weight percent, and the balance is ZrO2. The catalyst disclosed by the invention is applied to a reaction for synthesis of the 2,6-dimethyl-4-heptanone from the acetone, and has the characteristics that conversion rate of the acetone serving as a raw material is high; the selectivity of the 2,6-dimethyl-4-heptanone serving as a product is high, that is the yield of the 2,6-dimethyl-4-heptanone serving as a target product is high.