Abstract:
Mangesium/aluminum synthetic anionic clay catalysts are made by spray-drying a slurry of a Mg/Al synthetic clay, making a plasticized mixture of the spray-dried clay with diatomaceous earth, forming, drying and calcining the formed dried mixture. The catalyst is useful for making isophorone by the condensation of acetone.
Abstract:
The present invention relates to a process for making novel catalysts, catalyst supports, and adsorbers comprising synthetic hydrotalcite-like binders, having a sheet-like morphology and a sheet broadness to thickness ratio of at least 50 and a formula Mg.sub.1-x Al.sub.x (OH).sub.2.xA.sup.-. mH.sub.2 O where A.sup.- is a mono carboxylic anion of the form RCOO.sup.- where R is C.sub.n H.sub.2n+1 and n=0-5, and x and m are numbers satisfying the following conditions:0.2
Abstract translation:本发明涉及制备新型催化剂,催化剂载体和包含合成水滑石状粘合剂的吸附剂的方法,其具有片状形态和片材宽度与厚度之比至少为50和式Mg1-xAlx(OH) 2.xA-。 mH 2 O其中A-是RCOO-其中R是C n H 2n + 1且n = 0-5的单羧基阴离子,x和m是满足以下条件的数:0.2 <= x <= 0.4 0.0 <= m < = 4这种类水滑石材料与无机材料结合形成具有良好机械强度的形状。 该方法包括从具有镁(二价阳离子)至铝(三价阳离子)摩尔比为1:1至10:1,单羧酸阴离子与铝(三价阳离子)摩尔比为0.1:1至1.2:1的合成混合物开始 并任选地添加其他阴离子。 该方法还包括使含有镁和铝阳离子和单羧酸阴离子的混合物在至少40℃的温度和至少7℃的pH下在含水浆液中反应。然后将结晶的水滑石产物喷雾干燥。 将该喷雾干燥产物与无机材料和水混合以形成增塑混合物。 塑化混合物形成各种形状。 然后将这些形状干燥以除去水,煅烧,蒸汽处理或根据其具体应用的要求定制。
Abstract:
A synthetic hydrotalcite-like material having a sheet-like morphology and a sheet broadness to thickness ratio of at least 50 and a formula Mg.sub.1-x Al.sub.x (OH).sub.2.xA.mH.sub.2 O where A is a mono carboxylic anion of the form RCOO.sup.- where R is C.sub.n H.sub.2n+1 and n=0-5, and x and m are numbers satisfying the following conditions:0.2
Abstract translation:具有片状形态和片状宽度与厚度比至少为50且式Mg1-xAlx(OH)2.xA.mH2O的合成类水滑石材料,其中A是RCOO形式的单羧基阴离子,其中 R是C n H 2n + 1且n = 0-5,x和m是满足以下条件的数:0.2 <= x <= 0.4 0.0 <= m <= 4由具有镁(二价 阳离子)与铝(三价阳离子)摩尔比为1:1至10:1,单羧基阴离子与铝(三价阳离子)的摩尔比为0.1:1至1.2:1,并且任选地加入其它阴离子。 该方法包括使含镁和铝阳离子和单羧酸阴离子的混合物在至少40℃的温度和至少7的pH下在含水浆液中反应。
Abstract:
Mesitylene (1,3,5 trimethylbenzene) is made by passing acetone in the vapor phase over a niobium catalyst. The catalyst is preferably made by impregnating a silica support with 2% niobium by weight and calcining for about 18 hours at about 550.degree. C. 70% selectivity is obtained at 60-80% by weight conversion.
Abstract:
Basic mixed oxides useful for base catalyzed reactions such as the aldol condensation of acetone and also useful as catalyst supports are made by mixing an acid such as nitric acid or acetic acid with a pseudoboehmite to form a gel, adding magnesium oxide or hydroxide, in a ratio of magnesium to aluminum of about 1:1 to about 10:1, agitating and heating for about 1 to 24 hours, and subsequently drying and calcining. The resulting polymorphic magnesium-aluminum oxide composition is hightly effective in the aldol condensation of acetone to isophorone, and other base catalyzed reactions such as isomerization of olefins, aldol condensation of aldehydes.
Abstract:
Isophorone is made by the aldol condensation of acetone followed by separate steps to remove acetone, mesityloxide, and beta isophorone. Variations include recycling of mesityloxide and/or beta isophorone.
Abstract:
Magnesium/aluminum synthetic anionic clay catalysts are made by spray-drying a slurry of a Mg/Al synthetic clay, making a plasticized mixture of the spray-dried clay with diatomaceous earth, forming, drying and calcining the formed dried mixture. The catalyst is useful for making isophorone by the condensation of acetone.
Abstract:
Basic mixed oxides useful for base catalyzed reactions such as the aldol condensation of acetone and also useful as catalyst supports are made by mixing an acid such as nitric acid or acetic acid with a pseudob oehmite to form a gel, adding magnesium oxide or hydroxide, in a ratio of magnesium to aluminum of about 1:1 to about 10:1, agitating and heating for about 1 to 24 hours, and subsequently drying and calcining. The resulting polymorphic magnesium-aluminum oxide composition is highly effective in the aldol condensation of acetone to isophorone, and other base catalyzed reactions such as isomerization of olefins, aldol condensation of aldehydes.
Abstract:
A synthetic nickel (or cobalt) containing hydrotalcite-like material having a sheet-like morphology and a sheet broadness to thickness ratio of at least 50 and a formula M.sub.1-x Al.sub.x (OH).sub.2 .multidot.xA.multidot.mH.sub.2 O where M is Ni or Co, A is a mono carboxylic anion of the form RCOO.sup.- where R is C.sub.n H.sub.2n+1 and n=0-5, and x and m are numbers satisfying the following conditions:0.2
Abstract translation:一种具有片状形态和片状宽度比至少为50的公式M1-xAlx(OH)2×A×MH2O的合成镍(或钴)类似水滑石材料,其中M为Ni或Co,A为单 羧酸阴离子,其形式为RCOO,其中R为CnH2n + 1,n = 0-5,x和m为满足下列条件的数:0.2 <= x <= 0.4 0.0 <= m <= 4 具有0.1或1:1至1.2:1的单羧酸阴离子与铝(三价阳离子)的摩尔比为0.1:1至1.2:1的合成混合物,其中Ni或Co(二价阳离子)与铝(三价阳离子)摩尔比为1:1至10:1, 添加其他阴离子 该方法包括在至少40℃的温度和至少7℃的pH下,使含有镍(或钴)和铝阳离子和单羧酸阴离子的混合物在含水浆液中反应。
Abstract:
The present invention is a process for the production of isophorone having improved color and color stability. Crude isophorone is selectively hydrogenated to remove color forming impurities. The product isophorone will have an APHA color of about 10 or less.