公开(公告)号：US08940269B2

公开(公告)日：2015-01-27

申请号：US13855180

申请日：2013-04-02

Applicant: California Institute of Technology

Inventor： Mark E. Davis ,  Bingjun Xu ,  Yashodhan Bhawe

IPC: C01B3/06 ,  C01B3/04 ,  C01B13/02

CPC classification number: C01B3/063 ,  C01B3/042 ,  C01B13/0207 ,  Y02E60/364

Abstract: The present invention is directed to a method of thermochemical forming H2, O2, or a combination thereof from water, said method comprising the steps of contacting a composition comprising a spinel-type transition metal oxide of formula M3O4 with an alkali metal carbonate bicarbonate, or mixture thereof in the presence of H2O to form H2, CO2, and an alkali metal ion-transition metal oxide; hydrolytically extracting at least a portion of alkali metal ions from the alkali metal ion-transition metal oxide by the reaction with CO2 and liquid H2O; and thermochemically reducing the resulting oxidized-transition metal oxide. The thermochemical reduction of CO2 based on analogous methods is also disclosed.

Abstract translation: 本发明涉及一种从水中热化学形成H 2，O 2或其组合的方法，所述方法包括以下步骤：将包含式M3O4的尖晶石型过渡金属氧化物的组合物与碱金属碳酸氢盐碳酸氢盐接触，或 其混合物在H 2 O的存在下形成H 2，CO 2和碱金属离子过渡金属氧化物; 通过与CO 2和液体H 2 O的反应从碱金属离子过渡金属氧化物中水解提取至少一部分碱金属离子; 并热氧化还原所得氧化过渡金属氧化物。 还公开了基于类似方法的CO 2的热化学还原。

公开(公告)号：US10173211B2

公开(公告)日：2019-01-08

申请号：US14882587

申请日：2015-10-14

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Yuewei Ji ,  Mark A. Deimund ,  Yashodhan Bhawe ,  Mark E. Davis

IPC: B01J29/06 ,  B01J37/10 ,  C07C1/20 ,  C01B39/02 ,  B01J29/70 ,  B01J29/08 ,  B01J35/10

Abstract: The present invention is directed to methods of enhancing the catalytic activities of 8-MR zeolites, the methods comprising treating a precursor 8-MR zeolite that has been prepared without the use of an organic structure directing agent and having an Si/Al ratio of less than 5, with high temperature steam for a period of time sufficient to extract at least a portion of the aluminum from the precursor zeolite framework to form a steam-treated zeolite having an Si/tetrahedral Al ratio of greater than 5, wherein the steam has a temperature in a range of from about 350° C. to about 850° C. The compositions produced by these methods and their use in catalytic reactions are also provided.

公开(公告)号：US09206042B2

公开(公告)日：2015-12-08

申请号：US14533445

申请日：2014-11-05

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Mark E. Davis ,  Bingjun Xu ,  Yashodhan Bhawe

IPC: C01B3/06 ,  C01B3/04 ,  C01B13/02

CPC classification number: C01B3/063 ,  C01B3/042 ,  C01B13/0207 ,  Y02E60/364

Abstract: The present disclosure is directed to methods of catalytically reducing carbon dioxide, each method comprising: contacting a composition comprising a spinel-type transition iron oxide with an alkali metal carbonate, bicarbonate, or mixture thereof at a first temperature to form CO, and an alkali metal ion-transition metal oxide; hydrolytically extracting at least a portion of alkali metal ions from the alkali metal ion-transition metal oxide by the reaction with CO2 and liquid H2O at a second temperature; and thermochemically reducing the transition metal composition of the second step at a third temperature, with the associated formation of O2.

Abstract translation: 本公开涉及催化还原二氧化碳的方法，每种方法包括：在第一温度下将包含尖晶石型过渡铁氧化物的组合物与碱金属碳酸盐，碳酸氢盐或其混合物接触以形成CO，和碱 金属离子过渡金属氧化物; 在第二温度下通过与CO 2和液体H 2 O的反应从碱金属离子过渡金属氧化物中水解提取至少一部分碱金属离子; 并在第三温度下热化学地还原第二步的过渡金属组成，并伴随着O2的形成。