公开(公告)号：MY183941A

公开(公告)日：2021-03-17

申请号：MYPI2016000396

申请日：2014-09-15

Applicant: BASF SE

Inventor： DR HAMMON ULRICH ,  DR BORCHERT HOLGER ,  DR WALSDORFF CHRISTIAN ,  DOBNER CORNELIA KATHARINA ,  DR WELKER-NIEUWOUDT CATHRIN ALEXANDRA ,  MACHT JOSEF ,  DR KARPOV ANDREY

Abstract: What is described is a catalyst for preparation of an .alpha.,.beta.-unsaturated carboxylic acid by gas phase oxidation of an a,? -unsaturated aldehyde, comprising a shaped support body with an active composition applied thereto, wherein the active composition coverage q is at most 0.3 mg/mm2, where Q is the active composition content of the catalyst in % by weight and Sm is the specific geometric surface area of the shaped support body in mm2/mg. Also described are a process for preparing the catalyst and a process for preparing an a,? -unsaturated carboxylic acid by gas phase oxidation of an a,? -unsaturated aldehyde over a fixed catalyst bed comprising a bed of the catalyst. The catalyst, with constantly high conversion of acrolein, reduces overoxidation to COx and increases the selectivity of acrylic acid formation.

公开(公告)号：MY169081A

公开(公告)日：2019-02-14

申请号：MYPI2015001731

申请日：2014-01-13

Applicant: BASF SE

Inventor： DR WALSDORFF CHRISTIAN ,  DR RER NAT GRUNE PHILIPP ,  DR -ING JOSCH JAN PABLO

Abstract: The invention relates to a method for producing butadiene from n-butenens, comprising the following steps: A) a feed gas flow (a) containing n-butenes is provided; B) the feed gas flow (a) containing n-butenes and an oxygen-containing 10 gas is fed to at least one dehydrogenation area and is oxidatively dehydrogenated from n-butenes to form butadiene; a product gas flow (b) containing butadiene, unreacted n-butenes, water vapour, oxygen, low-boiling point hydrocarbons, optionally carbon oxides and optionally inert gases is obtained; C) the product gas flow (b) is cooled and compressed in at least one 15 cooling step and at least one compression step, said product gas flow (b) being brought into contact with a coolant (4) supplied in the circuit; at least one condensate flow (c1) containing water and a gas flow (c2) containing butadiene, n-butenes, water vapour, oxygen, low-boiling point hydrocarbons, optionally carbon oxides and optionally inert gases is obtained; D) non-condensable and 20 low-boiling point gas component parts containing oxygen, low-boiling point hydrocarbons, optionally carbon oxides and optionally inert gases are separated from the gas flow (c2) by absorbing C4-hydrocarbons containing the butadiene and n-butenes in absorption means supplied in the circuit; an absorption agent flow charged with C4-hydrocarbons and the gas flow (d2) are obtained, and subsequently the C4-hydrocarbon is desorbed from the charged absorption agent flow; a C4-product gas flow is obtained; E) the C4-product flow (d1) is separated by extractive distillation using a selected solvent for butadiene in a butadiene and the material flow (e1) containing the selective solvent and a material flow (e2) containing n-butenes; F) the butadiene and the material flow (e1) containing the selective solvent is distilled in a material flow (f1) consisting essentially of the selective solvent and a material flow (f2) containing a butadiene; wherein the samples are taken in step C) from the coolant (4) supplied in the circuit and samples are taken in step D) from absorption means supplied in the circuit, the peroxide content being determined in the taken samples using iodometry, differential scanning calorimerty (DSC) or micro calorimerty. (Fig.1)

公开(公告)号：MY169044A

公开(公告)日：2019-02-07

申请号：MYPI2015001472

申请日：2014-01-28

Applicant: BASF SE

Inventor： DR WALSDORFF CHRISTIAN ,  DOBNER CORNELIA KATHARINA ,  DR WELKER-NIEUWOUDT CATHRIN ALEXANDRA ,  DR MACHT JOSEF ,  DR MULLER-ENGEL KLAUS JOACHIM

Abstract: A process for producing a catalytically active composition being a mixture of a multielement oxide comprising the elements Mo and V and at least one oxide of molybdenum, in which spray drying of an aqueous solution or of an aqueous suspension of starting compounds comprising the elements of the multielement oxide produces a spray powder P, a pulverulent oxide of molybdenum and optionally shaping assistants are added thereto, shaped bodies are shaped from the resulting mixture and these are converted to the catalytically active composition by thermal treatment. (Fig.1)