-
公开(公告)号：US4376106A
公开(公告)日：1983-03-08
申请号：US301749
申请日：1981-09-14
CPC分类号： C01B39/28 , C01B33/2853 , Y10S423/21
摘要： A Y-type zeolite having a SiO.sub.2 /Al.sub.2 O.sub.3 ratio of at least about 4 is produced by the following process. In the first step of the process, an aqueous alkali silicate solution and an aqueous alkali aluminate solution are mixed together in the presence of an alkali in an amount such that the ratio of M.sub.2 O(M: an alkali metal)/Al.sub.2 O.sub.3, present in the mixed solution, is at least about 5 by mole, followed by forming a gel in the mixed solution and, then, separating the gel therefrom. In the second step, the separated gel is incorporated in an aqueous alkali silicate solution or an aqueous alkali silicate-alkali mixed solution to obtain a slurry and, then, a Y-type zeolite crystal is formed in the slurry.
摘要翻译： 通过以下方法制备SiO 2 / Al 2 O 3比例为至少约4的Y型沸石。 在该方法的第一步中，将碱金属硅酸盐水溶液和碱金属铝酸盐溶液在碱的存在下混合在一起，使得存在于所述碱中的M 2 O（M：碱金属）/ Al 2 O 3的比例 混合溶液至少约为5摩尔，然后在混合溶液中形成凝胶，然后从中分离凝胶。 在第二步中，将分离的凝胶加入碱性硅酸钠水溶液或碱性硅酸碱 - 碱水溶液中以获得浆料，然后在该浆料中形成Y型沸石晶体。
-
公开(公告)号：US4247527A
公开(公告)日：1981-01-27
申请号：US49408
申请日：1979-06-18
CPC分类号： C01B39/02 , C01B33/2823 , Y10S423/21 , Y10S423/24
摘要： Zeolite substantially free from a free alkali ingredient is produced by a process wherein a silica source and an alumina source is reacted in an aqueous reaction medium containing an excessive amount of an alkali ingredient to form zeolite, followed by separating the so formed zeolite from the aqueous alkaline reaction medium or from an aqueous medium in which the zeolite, after being separated from the aqueous alkaline reaction medium, has been slurried. The separation of the zeolite from the aqueous alkaline reaction medium or from the aqueous medium, in which the zeolite has been slurried after being separated from the aqueous alkaline reaction medium, is effected in the added presence of an alkali metal or alkaline earth metal salt of aluminic acid.
摘要翻译： 基本上不含游离碱成分的沸石是通过二氧化硅源和氧化铝源在含有过量碱性成分的含水反应介质中反应形成沸石的方法生产的，然后将所形成的沸石与水 碱性反应介质或水性介质，其中沸石在与碱性水溶液介质分离后已经浆化。 沸石从含水碱性反应介质或从水性介质中分离出来的沸石，其中沸石已经从碱性水溶液介质中分离后浆化，在碱金属或碱土金属盐的碱金属或碱土金属盐的存在下进行 铝酸。
-
公开(公告)号：US4201668A
公开(公告)日：1980-05-06
申请号：US917287
申请日：1978-06-20
CPC分类号： C02F1/5236 , B01D37/03
摘要： A treatment for improving the filtering characteristics of the sludge is attained by adding a magnesium compound with or without an iron salt and further adding a base to maintain the pH of the sludge at higher than 9.0.
摘要翻译： 通过添加具有或不具有铁盐的镁化合物并进一步添加碱以将污泥的pH保持在9.0以上，来提高污泥的过滤特性的处理。
-
公开(公告)号：US4125466A
公开(公告)日：1978-11-14
申请号：US798171
申请日：1977-05-18
CPC分类号： C02F1/5236 , B01D37/03
摘要： A treatment for improving the filtering characteristics of the sludge is attained by adding a magnesium compound with or without an iron salt and further adding a base to maintain the pH of the sludge at higher than 9.0.
摘要翻译： 通过添加具有或不具有铁盐的镁化合物并进一步添加碱以将污泥的pH保持在9.0以上，来提高污泥的过滤特性的处理。
-
公开(公告)号：US4118319A
公开(公告)日：1978-10-03
申请号：US774051
申请日：1977-03-03
CPC分类号： B01D37/03 , C02F1/5236
摘要： Light burned magnesia is added to sludge which comprises biological aggregate or polyvalent metal hydroxide aggregate to improve filtering characteristics.
摘要翻译： 将轻燃烧的氧化镁加入到包含生物聚集体或多价金属氢氧化物聚集体的污泥中以改善过滤特性。
-
公开(公告)号：US4016215A
公开(公告)日：1977-04-05
申请号：US551646
申请日：1975-02-21
申请人： Susumu Otsuki , Kanichi Uchida , Isao Miyanohara
发明人： Susumu Otsuki , Kanichi Uchida , Isao Miyanohara
摘要： 1,1,1-TRICHLOROETHANE IS STABILIZED AGAINST DECOMPOSITION INITIATED BY CONTACT WITH IRON BY THE USE OF A COMBINATION OF STYRENE OXIDE, PHENYL GLYCIDYL ETHER OR MIXTURES THEREOF WITH A SECOND CONVENTIONAL STABILIZER OF AN ALCOHOL, A NITRO COMPOUND OR A CYCLIC ETHER.
摘要翻译： 1,1,1-三氯乙烷通过使用苯乙烯氧化物，苯乙二醇醚或其混合物与醇，硝基化合物或环状醚的第二种常规稳定剂的组合，与铁接触引发的分解稳定。
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.021 秒)
