METHOD FOR PREPARING OF CATALYST FOR PARTIAL OXIDATION OF ACROLEIN

• Main Authors: PARK, JU YEON, YOO, YEON SIK, CHOI, BYEONG RYEOL, KANG, JEONG HWA, KIL, MIN HO, LEE, WON HO, SHIN, HYEON JONG, CHOI, YEONG HYEON
• Format: Patent
• Language: English; Korean
• Published: 05.06.2004
• Edition: 7
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

PURPOSE: Provided is a method for preparing a catalyst for partly oxidation of an acrolein which is able to increase the conversion rate of the acrolein, activity and selectivity regarding on an acrylic acid. CONSTITUTION: The method for preparing a catalyst for partly oxidizing reaction of acrolein represented by MoaWbVcAdBeOx comprises the steps of (a) preparing a catalyst suspension by dissolving a salt of at least one metal selected from the group consisting of Mo, W, Fe, Cu, Sr, Bi, Cr, Sn, Sb, K and alkaline earth metals in water; (b) adjusting the acidity of the catalyst suspension to pH 3.5 to 6.6 by putting a base solution or an acid solution in the catalyst suspension of the step (a); (c) supporting the catalyst in a carrier by contacting the catalyst suspension of the step (b) with an inert carrier; and (d) drying and calcining the supported catalyst of the step (c), wherein the Mo is molybdenum, W is tungsten, V is vanadium, A is Fe, Cu, Bi, Cr, Sn, Sb or K, B is an alkaline earth metal, each a, b, c, d and e represents an atomic rate of each metals if a is 12 then b is 1-5, c is 1-6, d is 1-5 and e is 0-3, and x is a value determined by oxidized state of each metals. 본 발명은 아크롤레인의 부분 산화 반응용 촉매의 제조방법에 관한 것으로, 특히 촉매 중 금속성분의 염을 물에 용해시켜 제조한 촉매 현탁액에 염기용액 및 산성용액을 투입하여 촉매 현탁액의 산도를 조절하고, 상기 산도가 조절된 촉매 현탁액을 불활성 담체와 접촉시켜 촉매를 담체에 담지시킨 후, 건조 및 소성하여 제조함으로써 아크롤레인 전환율이 우수할 뿐만 아니라, 아크릴산에 대한 활성, 선택도, 및 수율을 향상시킬 수 있는 아크롤레인의 부분 산화 반응용 촉매의 제조방법에 관한 것이다.