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公开(公告)号：US4699894A
公开(公告)日：1987-10-13
申请号：US724146
申请日：1985-04-17
IPC分类号： B01J29/00 , B01J29/068 , B01J29/08 , B01J29/10 , B01J29/62 , B01J29/63 , B01J29/89 , C10G35/095 , B01J29/30
CPC分类号： C10G35/095 , B01J29/10 , B01J29/62 , B01J29/63 , B01J2229/26 , B01J2229/42 , B01J29/08
摘要： A highly selective zeolitic reforming catalyst is disclosed that contains a promoter selected from the group consisting of iron, cobalt, and titanium; and that has a platinum to promoter weight ratio of less than 10:1. In one embodiment a type L zeolite is formed by combining an aqueous solution of potassium hydroxide, aluminum hydroxide, and ferric nitrate with an aqueous solution of silica to form a thickening gel in a mother liquor; heating the thickening gel to form a type L zeolite; cooling the solution containing the type L zeolite; decanting the mother liquor from the solution; filtering the type L zeolite from the solution; washing the filtered type L zeolite so that the pH of the wash is about 101/2; and drying the washed type L zeolite. The catalyst is formed by adding platinum to the dried type L zeolite by pore fill impregnation with an aqueous solution of Pt(NH.sub.3).sub.4 (NO.sub.3).sub.2 to form a catalyst; drying the catalyst and calcining the catalyst.
摘要翻译： 公开了一种高选择性沸石重整催化剂，其包含选自铁，钴和钛的助催化剂; 并且其具有小于10:1的铂与促进剂重量比。 在一个实施方案中，通过将氢氧化钾，氢氧化铝和硝酸铁的水溶液与二氧化硅水溶液组合以在母液中形成增稠凝胶而形成L型沸石; 加热增稠凝胶形成L型沸石; 冷却含有L型沸石的溶液; 从溶液中滗出母液; 从溶液中过滤L型沸石; 洗涤过滤的L型沸石使洗涤液的pH值为约101/2; 并干燥洗涤的L型沸石。 通过用Pt（NH 3）4（NO 3）2水溶液的孔填充浸渍将铂添加到干燥的L型沸石中形成催化剂，形成催化剂; 干燥催化剂并煅烧催化剂。
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公开(公告)号：US4698322A
公开(公告)日：1987-10-06
申请号：US724145
申请日：1985-04-17
IPC分类号： B01J29/61 , B01J29/52 , B01J29/62 , B01J29/72 , C10G35/09 , C10G35/095 , B01J29/30 , B01J29/08
CPC分类号： B01J29/63 , B01J29/62 , C10G35/095 , B01J2229/26 , B01J2229/42
摘要： A highly selective zeolitic reforming catalyst is disclosed that contains a promoter selected from the group consisting of iron, cobalt, and titanium; and that has a platinum to promoter weight ratio of less than 10:1. In one embodiment a type L zeolite is formed by combining an aqueous solution of potassium hydroxide, aluminum hydroxide, and ferric nitrate with an aqueous solution of silica to form a thickening gel in a mother liquor; heating the thickening gel to form a type L zeolite; cooling the solution containing the type L zeolite; decanting the mother liquor from the solution; filtering the type L zeolite from the solution; washing the filtered type L zeolite so that the pH of the wash is about 101/2; and drying the washed type L zeolite. The catalyst is formed by adding platinum to the dried type L zeolite by pore fill impregnation with an aqueous solution of Pt(NH.sub.3).sub.4 (NO.sub.3).sub.2 to form a catalyst; drying the catalyst and calcining the catalyst.
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3.发明授权
公开(公告)号：US5055382A
公开(公告)日：1991-10-08
申请号：US305252
申请日：1989-02-01
CPC分类号： G03C7/44
摘要： A three-part bleach-fix regeneration kit is utilized to restore the capability of a spent bleach-fix solution to function as a working solution in photographic processing. The first part, which is an aqueous alkaline solution containing a buffering agent and an aminopolycarboxylic acid, is added to the spent bleach-fix solution prior to electrolytic recovery of silver therefrom. The second and third parts, which are aqueous acidic solutions containing, respectively, an iron salt and a thiosulfate fixing agent, are added after electrolytic recovery of silver. The first part functions to increase the pH of the spent bleach-fix solution to a level at which electrolytic silver recovery is optimized, while the second and third parts function to lower the pH to an optimum level for use in photographic processing. In addition to providing the necessary pH changes, addition of the three parts in this manner restores all necessary components to their proper concentration. Reaction of the aminopolycarboxylic acid and the iron salt brings about in situ generation of the complex which functions as the bleaching agent.
摘要翻译： 使用三部分漂白修复再生试剂盒来恢复废漂白剂固定液在照相处理中作为工作溶液的功能。 将含有缓冲剂和氨基多羧酸的碱性水溶液的第一部分在从其中电解回收银之前加入到用过的漂白剂固定溶液中。 在电解回收银之后，加入分别含有铁盐和硫代硫酸盐固定剂的酸性水溶液的第二和第三部分。 第一部分用于将消耗的漂白剂固定溶液的pH提高到电解银回收优化的水平，而第二和第三部分的作用是将pH降低到用于照相处理的最佳水平。 除了提供必要的pH变化之外，以这种方式添加三个部分还原所有必需的组分以使其适当浓度。 氨基多羧酸和铁盐的反应导致原位产生用作漂白剂的络合物。
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