公开(公告)号：US11491457B2

公开(公告)日：2022-11-08

申请号：US16635790

申请日：2018-08-01

Applicant: Research Triangle Institute

Inventor： Jian-Ping Shen ,  Jason S. Norman ,  Brian S. Turk ,  Raghubir Gupta

IPC: B01J20/08 ,  B01D53/02 ,  B01J20/28 ,  B01J20/30

Abstract: Zinc oxide-based sorbents, and processes for preparing and using them are provided, wherein the sorbents are preferably used to remove one or more reduced sulfur species from gas streams. The sorbents contain an active zinc component, optionally in combination with one or more promoter components and/or one or more substantially inert components. The active zinc component is a two-phase material, consisting essentially of a zinc oxide (ZnO) phase and a zinc aluminate (ZnAl2O4) phase. Each of the two phases is characterized by a relatively small crystallite size of typically less than about 50 nm (500 Angstroms). Preferably the sorbents are prepared by using an alkali metal base to convert a precursor mixture, containing a precipitated zinc oxide precursor and a precipitated aluminum oxide precursor, to the two-phase, active zinc oxide containing component, with the resulting sorbent having a sodium level within a desired range.

公开(公告)号：US09539541B2

公开(公告)日：2017-01-10

申请号：US13744992

申请日：2013-01-18

Applicant: SAUDI ARABIAN OIL COMPANY ,  RESEARCH TRIANGLE INSTITUTE

Inventor： Esam Zaki Hamad ,  Wajdi Issam Al-Sadat ,  Luke Coleman ,  J. P. Shen ,  Raghubir Gupta

IPC: B01D53/04 ,  B01D53/94 ,  B01J20/04 ,  B01D53/02 ,  B01D53/92 ,  B01J20/30 ,  B01J20/34 ,  B01D53/82

CPC classification number: B01D53/94 ,  B01D53/02 ,  B01D53/62 ,  B01D53/82 ,  B01D53/92 ,  B01D2251/30 ,  B01D2251/302 ,  B01D2251/304 ,  B01D2251/306 ,  B01D2251/402 ,  B01D2251/60 ,  B01D2251/602 ,  B01D2251/606 ,  B01D2253/112 ,  B01D2253/1124 ,  B01D2257/504 ,  B01D2258/012 ,  B01D2259/4566 ,  B01J20/04 ,  B01J20/041 ,  B01J20/043 ,  B01J20/3085 ,  B01J20/3433 ,  B01J20/3483 ,  B01J2220/42 ,  Y02A50/2342 ,  Y02C10/04 ,  Y02C10/08

Abstract: The invention relates to a mixed salt composition which is useful as a CO2 sorbent. The mixed salt composition comprises a Mg salt, and at least one Group IA element salt, where the Mg and Group IA element are present at a molar ratio of from 3:1 to 8:1. The resulting composition can adsorb about 20% or more of CO2 in a gas. Via varying the molar ratios of the components, and the Group IA element, one can develop compositions which show optional functionality at different conditions. The composition is especially useful in the adsorptive capture of CO2 on mobile sources, such as transportation vehicles, where it can be recovered during regeneration of the adsorbent composition and the CO2 used as a coolant gas, as a reactant in manufacture of fuel, and so forth.

Abstract translation: 本发明涉及可用作CO 2吸附剂的混合盐组合物。 混合盐组合物包含Mg盐和至少一种IA族元素盐，其中Mg和IA族元素以3:1至8:1的摩尔比存在。 所得组合物可以吸附气体中约20％或更多的CO 2。 通过改变组分和IA族元素的摩尔比，可以开发在不同条件下显示可选功能的组合物。 该组合物特别可用于在移动源上的吸附捕获二氧化碳，例如运输车辆，其中可以在吸附剂组合物的再生期间和用作冷却剂气体的CO 2中回收作为制造燃料的反应物等 向前。