摘要:
High selectivity in monomethylamine can be achieved by reacting methanol and ammonia, in such amounts as to provide a C/N ratio, from the methanol and ammonia reactants, of 0.5-1.5, in the presence of a catalyst selected from
a) mordenite wherein the primary cation is Li, Na, HNa having at least 2% Na by weight, K, Ca, Sr, Ba, Ce, Zn orCr b) ferrierite wherein the primary metal cation is Li, Na, K, Ca, Sr, Ba, Ce or Fe c) erionite ore d) Calcium erionite and e) clinoptilolite ore,
at a temperature of 250-475°C, a pressure of 7-7000 kPa, a contact time, normalized to 7 kPa pressure, of 0.1-60 seconds and a methanol conversion of 15-95%.
摘要:
Substituted fluorobenzenes are produced by pyrolyzing vinylfluorocyclobutanes at a temperature of 250-450°C in the presence of activated carbon or certain metal oxides selected from oxides of aluminium, titanium, cerium or chromium or mixtures of metal oxides.
摘要:
Catalyzed halogen exchange between perhaloolefins to form products of the formulas: wherein R 1 , R Z , R 3 , R 5 , R 6 and R 7 are independently selected from F, Cl, Br, C 1 to C 4 perfluoroalkyl and pentrafluorophenyl; or R 1 and R 3 together, R 2 and R 3 together, R 5 and R 7 together or R 6 and R 7 together, when both groups are in the cis configuration, may also represent perfluoroalkylene of 2 to 4 carbons or o-C 6 F 4 (-)CF 2 -; R 8 =F; R 4 = Cl or Br; none of the fluoroolefins simultaneously contain both Cl and Br; and R 1 , R 2 , R 3 , R 4 , R 5 , R 6 and R 7 may be chosen as to product identical structures for the reactants or for the products.
摘要翻译:在全卤代烯烃之间催化卤素交换以形成下式的产物:R 1 R 2 C = CR 3 R 8和R 5 R 6 C = CR 7 R 4其中 R 1,R 2,R 3,R 5,R 6和R 7独立地选自F,Cl,Br,C 1至C 4全氟烷基和五氟苯基; 或R 1和R 3一起,R 2和R 3一起,R 5和R 7一起或R 6和R 7一起,当两个基团都在 顺式构型也可以表示2至4个碳的全氟亚烷基或o-C 6 F 4( - )CF 2 - ; [R <8> = F; R 4 = Cl或Br; 氟烯烃中没有一个同时含有Cl和Br; 可以选择R 1,R 2,R 3,R 4,R 5,R 6和R 7为反应物或产物的产物相同的结构 。
摘要:
Catalytic transhalogenation of haloaromatics according to the equation: wherein
when C z is a benzene derivative, a+b=5; e=0; c+d=5; z=6; when C z is a pyridine derivative, a+b=4; e=1; c+d=4; z=5; when C z is a naphthalene derivative, a+b=7; e=0; c+d=7; z=10; and when C z is a biphenyl derivative, a+b=9; e=0; c+d=9; z=12; Li and L 2 , alike or different, are selected from F, Cl, Br, H, CN, C n F 2n+1 , and C 6 F 5 ; X is Cl, Br, or I when C z is a benzene derivative; and n is 1 to 12
摘要翻译:根据以下方程式进行卤代芳族化合物的卤化催化反应:其中当Cz为苯衍生物时,a + b = 5; E = 0; C + d = 5; Z = 6; 当Cz是吡啶衍生物时,a + b = 4; E = 1; C + d = 4; Z = 5; 当Cz是萘衍生物时,a + b = 7; E = 0; C + d = 7; Z = 10; 当Cz是联苯衍生物时,a + b = 9; E = 0; C + d = 9; Z = 12; Li和L2相同或不同,选自F,Cl,Br,H,CN,CnF2n + 1和C6F5; 当Cz是苯衍生物时,X是Cl,Br或I; 并且n是1至12
摘要:
Proces for producing dimethylamine by passing monomethylamine over a crystalline aluminosilicate catalyst selected from
a) mordenite wherein the primary cation is Na, HNa having at least 2 % Na, Mg, Ca, Sr or Ba b) ferrierite wherein the primary metal cation is Na, K, Mg, Ca, Sr or Ba c) clinoptilolite and d) phillipsite,
at a temperature of 250-475°C and a pressure of 7-7000 kPa, at a feed rate of 0.1-10 g of monomethylamine/g of catalyst per hour, at a monomethylamine conversion of 15-75% Selectivity is normally in excess of 80%.