Process for producing p-xylene
    1.
    发明授权
    Process for producing p-xylene 失效
    生产对二甲苯的方法

    公开(公告)号:US4377718A

    公开(公告)日:1983-03-22

    申请号:US285464

    申请日:1981-07-21

    摘要: In a process for producing p-xylene which comprises catalytically methylating toluene with a methylating agent in the gaseous phase, the improvement wherein(a) said methylation is carried out continuously in a multi-stage reaction system consisting of a plurality of separate series-connected fixed catalyst layers without separating the resulting xylenes in an intermediate stage,(b) said toluene is fed together with hydrogen gas into only the first-stage fixed catalyst layer and passed successively through the subsequent fixed catalyst layers, the amount of toluene fed being such that the total weight hourly space velocity of toluene is from 1 to 300 hr.sup.-1,(c) said methylating agent is fed into each of said fixed catalyst layers, if desired together with hydrogen gas, the amount of the methylating agent fed into each catalyst layer being 0.01/t moles to 1/t moles, in which t is the number of methyl groups in the methylating agent, per mole of toluene fed into the first-stage catalyst layer, and the total amount of the methylating agent fed into all of the catalyst layers being within the range of 0.1/t moles to 2/t moles, in which t is as defined, per mole of toluene fed into the first-stage catalyst layer, and(d) each fixed catalyst layer is filled with a catalyst composed of a crystalline aluminosilicate containing magnesium oxide or lanthanide oxide.

    摘要翻译: 在一种生产对二甲苯的方法中,其包括在气相中用甲基化剂甲苯化甲苯,其中(a)所述甲基化在多级反应体系中连续进行,所述多级反应体系由多个单独的串联 固定的催化剂层,而不在中间阶段分离所得的二甲苯,(b)将所述甲苯与氢气一起进入第一级固定催化剂层,并依次通过随后的固定催化剂层,进料的甲苯的量 甲苯的总重小时空速为1〜300小时-1,(c)如果需要,将所述甲基化剂与氢气一起进料到每个所述固定催化剂层中,将甲基化剂加入到每个 催化剂层为每摩尔进料到第一阶段催化剂中的甲苯为0.01 / t摩尔至1 / t摩尔,其中t为甲基化剂中的甲基数 并且进料到所有催化剂层中的甲基化剂的总量在0.1 / t摩尔至2 / t摩尔的范围内,其中t定义为每摩尔进料到第一阶段催化剂中的甲苯 层,并且(d)每个固定的催化剂层填充有由含有氧化镁或镧系元素氧化物的结晶硅铝酸盐组成的催化剂。

    Preparation of crystalline aluminosilicate zeolite, and its product
    2.
    发明授权
    Preparation of crystalline aluminosilicate zeolite, and its product 失效
    结晶硅铝酸盐沸石及其制品的制备

    公开(公告)号:US4954326A

    公开(公告)日:1990-09-04

    申请号:US380723

    申请日:1989-07-12

    摘要: A process for producing a crystalline aluminosilicate zeolite characterized by having (a) a silica/alumina mole ratio of from 10 to 100, (b) X-ray lattice distances d shown in Table A of the specification, and (c) a specific n-hexane adsorption, under limited measuring conditions, of at least 0.07 g/g, which comprises maintaining a silica source, an alumina source, and a zeolite selected from zeolites ZSM-5 and zeolites having said characteristics, in an aqueous solution containing 1 to 200 millimoles, per gram of said zeolite, of an alkali metal hydroxide under such temperature, pressure and time conditions as to produce a crystalline aluminosilicate zeolite; and a crystalline aluminosilicate zeolite characterized by having aforesaid properties (a) to (c) and (d) a (2-methylpentane/cyclohexane) adsorption ratio of from 1.1 to 1.6.

    摘要翻译: 一种结晶性硅铝酸盐沸石的制造方法,其特征在于,(a)二氧化硅/氧化铝摩尔比为10〜100,(b)本说明书的表A所示的X射线晶格距离d,(c) 在有限的测量条件下,己烷吸附至少为0.07g / g,其包括将二氧化硅源,氧化铝源和选自沸石ZSM-5的沸石和具有所述特征的沸石在含有1至 在这样的温度,压力和时间条件下,产生结晶铝硅酸盐沸石的碱金属氢氧化物,每克所述沸石200毫摩尔; 其特征在于上述性质(a)〜(c)和(d)(2-甲基戊烷/环己烷)吸附比为1.1〜1.6。

    Process for selective dealkylation of alkyl-substituted aromatic
hydrocarbons
    4.
    发明授权
    Process for selective dealkylation of alkyl-substituted aromatic hydrocarbons 失效
    烷基取代芳烃选择性脱烷基化方法

    公开(公告)号:US4320242A

    公开(公告)日:1982-03-16

    申请号:US118324

    申请日:1980-02-04

    摘要: In a process for dealkylating a hydrocarbon material containing at least one alkyl-substituted aromatic hydrocarbon having bonded to the aromatic ring at least one alkyl group with at least 2 carbon atoms in the gaseous phase in the presence of hydrogen using a hydro-dealkylation catalyst, the improvement wherein (a) said hydro-dealkylation catalyst is composed of a crystalline aluminosilicate having a silica/alumina mole ratio of from 20 to 200 and containing a noble metal selected from platinum, palladium, rhodium and iridium, and (b) said dealkylation is carried out at a temperature of 250.degree. C. to 420.degree. C. and a pressure of not more than 100 psig, thereby selectively removing said alkyl group containing at least 2 carbon atoms from said alkyl-substituted aromatic hydrocarbon.

    摘要翻译: 在使用氢 - 脱烷基化催化剂的氢气存在下,在气相中含有至少一个与芳环键合至少一个具有至少2个碳原子的烷基的烃基物质脱烷基化的方法中, 其中(a)所述加氢脱烷基化催化剂由二氧化硅/氧化铝摩尔比为20-200的结晶硅铝酸盐和含有选自铂,钯,铑和铱的贵金属组成,和(b)所述脱烷基化 在250℃至420℃的温度和不超过100psig的压力下进行,从而从所述烷基取代的芳烃中选择性除去含有至少2个碳原子的烷基。

    Novel crystalline aluminosilicate zeolites and process for production
thereof
    6.
    发明授权
    Novel crystalline aluminosilicate zeolites and process for production thereof 失效
    新型结晶硅铝酸盐沸石及其生产方法

    公开(公告)号:US4695667A

    公开(公告)日:1987-09-22

    申请号:US705631

    申请日:1985-02-26

    摘要: A novel crystalline aluminosilicate zeolite characterized by having a composition of the following general formula expressed in terms of the mole ratios of oxides in the anhydrous statexM.sub.2/n O.Al.sub.2 O.sub.3.ySiO.sub.2wherein M represents at least one cation having a valence of n, x is a number between 0.5 and 4, and y is a number of at least 10, and having a specific X-ray diffraction pattern. Said crystalline aluminosilicate zeolite can be produced by maintaining a mixture of a water-soluble alkali metal compound, an N,N,N,N',N',N'-hexamethyl-1,6-hexane diammonium compound, a compound capable of giving silica under the reaction conditions, a compound capable of giving alumina under the reaction conditions and water, at a temperature of at least 80.degree. C. for a period sufficient to form crystals, and is useful as a catalyst for, for example, transalkylation or alkylation reaction of toluene, isomerization of xylene, isomerization of ethylbenzene to xylenes, etc.

    摘要翻译: 一种新型的结晶硅铝酸盐沸石,其特征在于具有以无机状态的氧化物摩尔比表示的以下通式的组成:xM 2 / nO·Al 2 O 3·ySiO 2,其中M表示至少一个价数为n的阳离子,x为 数为0.5〜4,y为10以上,具有特定的X射线衍射图。 所述结晶硅铝酸盐沸石可以通过保持水溶性碱金属化合物,N,N,N,N',N',N'-六甲基-1,6-己烷二铵化合物,能够 在反应条件下给予二氧化硅,在反应条件下能够得到氧化铝的化合物和水,在至少80℃的温度下足以形成晶体的时间,并且可用作例如烷基转移的催化剂 或甲苯的烷基化反应,二甲苯异构化,乙苯异构化成二甲苯等。

    Production of crystalline zeolites
    7.
    发明授权
    Production of crystalline zeolites 失效
    生产结晶沸石

    公开(公告)号:US4557919A

    公开(公告)日:1985-12-10

    申请号:US598691

    申请日:1984-04-10

    摘要: A process for producing a crystalline zeolite TPZ-12, which comprises maintaining a starting mixture at a temperature of at least 80.degree. C. for a period sufficient to produce zeolite crystals, said starting mixture consisting of(a) a substance capable of yielding silica under the reaction conditions,(b) a water-soluble alkali metal compound,(c) water, and(d) a diammonium compound represented by the following general formula ##STR1## wherein R.sub.1 and R.sub.2 are identical or different and each represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, p and q are identical or different and each represents an integer of 4 or 5, n is 4, 5 or 6, and y represents an anion having a valence of m, and additionally, if desired,(e) a substance capable of yielding alumina under the reaction conditions,in the particular quantities.

    摘要翻译: 一种生产结晶沸石TPZ-12的方法,其包括将起始混合物在至少80℃的温度下保持足以产生沸石晶体的时间,所述起始混合物由(a)能够产生二氧化硅的物质 在反应条件下,(b)水溶性碱金属化合物,(c)水和(d)由以下通式表示的二铵化合物:其中R 1和R 2相同或不同, 表示氢原子或碳原子数1〜4的烷基,p和q相同或不同,分别表示4或5的整数,n表示4,5或6,y表示m为阴离子 ,另外,如果需要,(e)能够在反应条件下以特定量产生氧化铝的物质。

    Isomerization of xylene
    8.
    发明授权
    Isomerization of xylene 失效
    二甲苯异构化

    公开(公告)号:US4331822A

    公开(公告)日:1982-05-25

    申请号:US133793

    申请日:1980-03-25

    摘要: In a process for isomerization of xylenes which comprises contactng an aromatic hydrocarbon stock mainly containing xylene isomers not attaining a thermodynamic equilibrium composition with a catalyst composition containing a crystalline aluminosilicate at an elevated temperature in the vapor phase in the presence of hydrogen, the improvement wherein said catalyst composition comprises a crystalline aluminosilicate having a silica/alumina mole ratio of at least 10 and contains at least two metals which are (a) platinum and (b) at least one metal selected from the group consisting of titanium, chromium, zinc, gallium, germanium, strontium, yttrium, zirconium, molybdenum, palladium, tin, barium, cesium, cerium, tungsten, osmium, lead, cadmium, mercury, indium, lanthanum, beryllium, lithium and rubidium.

    摘要翻译: 在二甲苯异构化的方法中,其包括在氢气存在下,在蒸气相中在高温下接触主要含有二甲苯异构体的芳族烃原料而不能获得热力学平衡组合物,所述组合物含有结晶硅铝酸盐,所述催化剂组合物在气相中处于升高的温度,其中所述 催化剂组合物包含具有至少10的二氧化硅/氧化铝摩尔比的结晶硅铝酸盐,并且包含至少两种金属,其为(a)铂和(b)至少一种选自钛,铬,锌,镓 锗,锶,钇,锆,钼,钯,锡,钡,铯,铈,钨,锇,铅,镉,汞,铟,镧,铍,锂和铷。

    Process for isomerizing xylene
    9.
    发明授权
    Process for isomerizing xylene 失效
    异构化二甲苯的方法

    公开(公告)号:US4700012A

    公开(公告)日:1987-10-13

    申请号:US948062

    申请日:1986-12-30

    IPC分类号: C07C5/27 C07C7/148 C07C15/08

    摘要: A process for continuously isomerizing xylene, which comprises subjecting a hydrocarbon feed material comprising a major proportion of a xylene isomer mixture and a minor proportion of non-aromatic hydrocarbons to xylene isomerization reaction, isolating a specific xylene isomer from the resulting isomerization reaction mixture, and recycling the remaining hydrocarbon mixture to the xylene isomerization reaction; wherein the hydrocarbon feed material or the xylene isomerization reaction mixture is treated with hydrogen in the presence of a cracking catalyst comprising(a) a zeolite selected from zeolites ZSM-5, ZSM-11, ZSM-12, ZSM-34 and ZSM-48 series, at least 20% of its cation site being occupied by a cation of a metal selected from alkali metals and alkaline earth metals, and(b) a refractory amorphous inorganic oxide having platinum supported thereon,at a temperature and a weight hourly space velocity which simultaneously satisfy the following inequalities (i) to (iv) ##EQU1## wherein T represents the temperature (.degree.C.), and V represents the weight hourly space velocity (hr.sup.-1),thereby to crack the non-aromatic hydrocarbons in the hydrocarbon feed material or the xylene isomerization reaction mixture.

    Method for preparing dialkylnaphthalene
    10.
    发明授权
    Method for preparing dialkylnaphthalene 失效
    制备二烷基萘的方法

    公开(公告)号:US5365001A

    公开(公告)日:1994-11-15

    申请号:US39067

    申请日:1993-04-08

    CPC分类号: B01J23/62 B01J23/60 C07C5/41

    摘要: A method for preparing a dialkylnaphthalene in one step by contacting an dialkylbenzene compound with a solid catalyst in a gas or liquid phase in the presence of hydrogen, using a catalyst having composition (I) or (II) below:(1)(M.sup.1).sub.a.(M.sup.2).sub.b.(SiO.sub.2.XAl.sub.2 O.sub.3).(Al.sub.2 O.sub.3).sub.c (I)(2) Mixture of II-(i) and II-(ii):(M.sup.3).sub.d.(Al.sub.2 O.sub.3) II-(i)(M.sup.4).sub.e.(SiO.sub.2.XAl.sub.2 O.sub.3) II-(ii)wherein M.sup.1 is a metal selected from the group consisting of metals belonging to group VIII of a periodic table and rhenium;M.sup.2 is a member selected from the group consisting of zinc, gallium, and oxides thereof;M.sup.3 is a metal belonging to group VIII of a periodic table;M.sup.4 is at least one alkali metal; anda, b, c, d, e, and X represent proportions, respectively.

    摘要翻译: PCT No.PCT / JP92 / 01006 Sec。 371日期:1993年4月8日 102(e)日期1993年4月8日PCT提交1992年8月6日PCT公布。 公开号WO93 / 02995 日本2月18日,1993年。一种通过使用具有下述组成(I)或(II)的催化剂在氢气存在下,在气相或液相中使二烷基苯化合物与固体催化剂接触的步骤中制备二烷基萘的方法。 :(1)(M1)a。(M2)b。(SiO2.XAl2O3)(Al2O3)c(I)(2)II-(i)和II-(ii)的混合物:(M3)d。 Al 2 O 3)II-(i)(M4)e。(SiO 2·XAl 2 O 3)II-(ii)其中M1是选自属于元素周期表第Ⅷ族的金属和铼的金属; M2是选自锌,镓及其氧化物的成员; M3是属于周期表第VIII族的金属; M4是至少一种碱金属; 和a,b,c,d,e和x分别表示比例。