公开(公告)号：US5234874A

公开(公告)日：1993-08-10

申请号：US681683

申请日：1991-04-08

Applicant: Mohammed Dekiouk ,  Gerard Hecquet ,  Stanislas Pietrzyk

Inventor： Mohammed Dekiouk ,  Gerard Hecquet ,  Stanislas Pietrzyk

IPC: B01J27/185 ,  B01J29/06 ,  B01J29/08 ,  B01J29/10 ,  B01J29/82 ,  B01J29/90 ,  B01J38/30 ,  C07B61/00 ,  C07C51/377 ,  C07C57/04 ,  C07C57/05

CPC classification number: B01J38/30 ,  B01J27/1853 ,  B01J29/084 ,  B01J29/90 ,  C07C51/377 ,  B01J29/82 ,  Y02P20/584

Abstract: For the oxidative dehydrogenation of saturated carboxylic acids to form .alpha.,.beta.-unsaturated carboxylic acids, saturated acids are contacted with a gas containing molecular oxygen and, where appropriate, an inert diluent gas, in the vapor phase, at a reaction temperature of 250.degree. to 600.degree. C., in the presence of a catalyst system comprising a non-supported catalyst of the formula FeP.sub.x Me.sub.y O.sub.z, wherein: Me is at least one of the following elements: Li, Na, K,, Rb, Cs, Mg, Ca, Sr and Ba; x has a value from 0.2 to 3.0; y has a value from 0.01 to 0.2; and z is the quantity of oxygen bonded to the other elements and corresponding to their oxidation state, in an entrained-bed reactor and, where appropriate, in the presence of steam in a molar ratio to the saturated acid not exceeding 0.5. The catalyst is beneficially associated with at least one zeolite, preferably in a concentration sufficient to improve the attrition resistance of the catalyst, e.g., in an amount by weight of about 1-10% of the catalyst.

Abstract translation: 对于饱和羧酸的氧化脱氢形成α，β-不饱和羧酸，饱和酸与含有分子氧的气体和适当的气态相反应的惰性稀释气体在250℃的反应温度下接触。 在含有式FeP x M y O z的非负载催化剂的催化剂体系的存在下，其中：Me是以下元素中的至少一种：Li，Na，K ,, Rb，Cs，Mg，Ca ，Sr和Ba; x的值为0.2〜3.0; y的值为0.01〜0.2; 并且z是在夹带床反应器中，并且在适当的情况下，在与饱和酸的摩尔比不超过0.5的蒸汽存在下，与其它元素结合并相应于其氧化态的氧的量。 该催化剂有利地与至少一种沸石有关，优选地具有足以提高催化剂耐磨性的浓度，例如以催化剂的约1-10％重量的量。