公开(公告)号：US20170369460A1

公开(公告)日：2017-12-28

申请号：US15700813

申请日：2017-09-11

Applicant: Scientific Design Company, Inc.

Inventor： Nabil Rizkalla ,  Andrzej Rokicki

IPC: C07D301/10 ,  B01J37/06 ,  B01J23/50 ,  B01J21/04 ,  B01J23/68 ,  B01J23/66 ,  C01F7/02 ,  B01J37/02

Abstract: A method for lowering the sodium content of different carriers which may have different physical properties as well as varying degrees of sodium is provided. The method, which lowers the sodium content from the surface, subsurface as well as the binding layer of the carrier, includes contacting a carrier with water. A rinse solution is recovered from the contacting. The rinse solution includes leached sodium from the carrier. The sodium content in the rinse solution is then determined. The contacting, recovering and determining are repeated until a steady state in the sodium content is achieved.

公开(公告)号：US20160251326A1

公开(公告)日：2016-09-01

申请号：US15054447

申请日：2016-02-26

Applicant: Scientific Design Company, Inc.

Inventor： Wojciech L. Suchanek ,  Nabil Rizkalla ,  Andrzej Rokicki

IPC: C07D301/10 ,  B01J35/02 ,  B01J35/10 ,  B01J23/68

CPC classification number: C07D301/10 ,  B01J21/04 ,  B01J23/688 ,  B01J35/0013 ,  B01J35/006 ,  B01J35/0066 ,  B01J35/023 ,  B01J35/1009 ,  B01J35/1038 ,  B01J35/1042 ,  B01J35/1061 ,  B01J35/1066 ,  B01J35/1071 ,  B01J35/1076

Abstract: A silver-based ethylene epoxidation catalyst is provided that exhibits improved performance, i.e., selectivity and activity decline. The catalyst that exhibits the improved performance includes greater than about 20% by weight of silver disposed on an alpha-alumina carrier, and a promoting amount of one or more promoters disposed on the alpha-alumina carrier. The silver is present on the alpha-alumina carrier as silver particles having a diameter of greater than about 150 nm and a distribution density of about 20 particles per 1 square micron or less.

Abstract translation: 提供了一种银基乙烯环氧化催化剂，其表现出改善的性能，即选择性和活性下降。 表现出改进性能的催化剂包括设置在α-氧化铝载体上的大于约20重量％的银，以及设置在α-氧化铝载体上的促进量的一种或多种助催化剂。 银作为银颗粒存在于α-氧化铝载体上，银颗粒的直径大于约150nm，分布密度约为每平方微米或更小的约20个颗粒。

公开(公告)号：US20140343306A1

公开(公告)日：2014-11-20

申请号：US14279534

申请日：2014-05-16

Applicant: SCIENTIFIC DESIGN COMPANY, INC.

Inventor： Nabil Rizkalla ,  Andrzej Rokicki

IPC: B01J23/50 ,  C07D301/10 ,  B01J21/04

CPC classification number: C07D301/10 ,  B01J21/04 ,  B01J23/50 ,  B01J23/66 ,  B01J23/688 ,  B01J37/0201 ,  B01J37/0207 ,  B01J37/06 ,  C01F7/02

Abstract: A method for lowering the sodium content of different carriers which may have different physical properties as well as varying degrees of sodium is provided. The method, which lowers the sodium content from the surface, subsurface as well as the binding layer of the carrier, includes contacting a carrier with water. A rinse solution is recovered from the contacting. The rinse solution includes leached sodium from the carrier. The sodium content in the rinse solution is then determined. The contacting, recovering and determining are repeated until a steady state in the sodium content is achieved.

Abstract translation: 提供了降低可能具有不同物理性质以及不同程度的钠的不同载体的钠含量的方法。 降低表面，地下以及载体结合层的钠含量的方法包括使载体与水接触。 从接触中回收漂洗溶液。 冲洗溶液包括从载体中浸出的钠。 然后确定冲洗溶液中的钠含量。 重复接触，回收和测定，直到达到钠含量的稳定状态。