公开(公告)号：US20240158321A1

公开(公告)日：2024-05-16

申请号：US18548980

申请日：2022-03-01

申请人： CHIYODA CORPORATION ,  UBE CORPORATION

发明人： Mitsunori SHIMURA ,  Dai TAKEDA ,  Jun MATSUMOTO ,  Atsushi YAMADA ,  Yuki NAGAO

IPC分类号： C07C5/48 ,  C25B1/04 ,  C25B3/03 ,  C25B3/26 ,  C25B15/029 ,  C25B15/08

CPC分类号： C07C5/48 ,  C25B1/04 ,  C25B3/03 ,  C25B3/26 ,  C25B15/029 ,  C25B15/081

摘要： [Task] Provided is a manufacturing method of butadiene that can reduce carbon dioxide emissions.
[Solution] A manufacturing method of butadiene includes an electrolytic reduction process 2 that produces ethylene and oxygen from carbon dioxide and water as a raw material by electrolytic reduction, a butene producing process 3 that produces butene by dimerizing the ethylene produced in the electrolytic reduction process, a mixing process 4 that prepares a mixed gas by mixing the oxygen produced in the electrolytic reduction process, the butene produced in the butene producing process, and air, and a butadiene producing process 5 that produces butadiene by heating the mixed gas and oxidatively dehydrogenating the butene, wherein carbon dioxide by-produced in the butadiene producing process is used as a portion of the raw material in the electrolytic reduction process.

公开(公告)号：US20240360577A1

公开(公告)日：2024-10-31

申请号：US18770479

申请日：2024-07-11

申请人： FURUKAWA ELECTRIC CO., LTD. ,  THE UNIVERSITY OF TOKYO ,  CHIYODA CORPORATION

发明人： Takahiro YAMAMOTO ,  Yu MIMURA ,  Kiyoshi YAMAMOTO ,  Masakazu SUGIYAMA ,  Tsutomu MINEGISHI ,  Jun MATSUMOTO ,  Dai TAKEDA

IPC分类号： C25B11/091 ,  C25B3/03 ,  C25B3/26 ,  C25B11/032 ,  C25D3/22 ,  C25D3/38 ,  C25D5/48 ,  C25D9/04

CPC分类号： C25B11/091 ,  C25B3/03 ,  C25B3/26 ,  C25B11/032 ,  C25D3/22 ,  C25D3/38 ,  C25D5/48 ,  C25D9/04

摘要： The present disclosure provides a cathode electrode in which selectivity of hydrogen decreases and selectivity of a carbon dioxide reduction product increases in a catalytic reaction producing carbon monoxide, an olefinic hydrocarbon such as ethylene, and an alcohol such as ethanol by a reduction reaction of carbon dioxide. A cathode electrode that electrically reduces carbon dioxide, including: a first layer containing cuprous oxide, copper, and at least one additional metal element selected from the group consisting of silver, gold, zinc, cadmium, and tin; and a second layer formed on the first layer and containing a constituent element composed of at least one metal element selected from the group consisting of copper, silver, gold, zinc, cadmium, and tin.

公开(公告)号：US20220356588A1

公开(公告)日：2022-11-10

申请号：US17815149

申请日：2022-07-26

申请人： RIKEN ,  CHIYODA CORPORATION ,  FURUKAWA ELECTRIC CO., LTD.

发明人： Katsushi FUJII ,  Kayo KOIKE ,  Ryuhei NAKAMURA ,  Satoshi WADA ,  Dai TAKEDA ,  Jun MATSUMOTO ,  Eri TORIKAI ,  Takahiro YAMAMOTO ,  Yu MIMURA ,  Kiyoshi YAMAMOTO ,  Shinsuke NISHIDA

IPC分类号： C25B3/26 ,  C25B3/03 ,  C25B3/07 ,  C25B11/093

摘要： The present disclosure provides a cathode electrode that can stably sustain a catalytic reaction producing an olefinic hydrocarbon such as ethylene and an alcohol such as ethanol by a reduction reaction of carbon dioxide over a long term. A cathode electrode that electrically reduces carbon dioxide, including cuprous oxide, copper, and at least one additional metal element selected from the group consisting of silver, gold, zinc, and cadmium.

公开(公告)号：US20210002775A1

公开(公告)日：2021-01-07

申请号：US16643858

申请日：2018-06-27

申请人： Chiyoda Corporation

发明人： Jun MATSUMOTO ,  Dai TAKEDA

IPC分类号： C25B1/10 ,  C25B15/02 ,  C25B15/08 ,  C25B9/08 ,  B01D53/18 ,  B01D53/14

摘要： A synthesis gas production system for producing CO and H2 by electrolyzing an aqueous solution containing CO2 includes: an electrolysis device including an anode chamber and a cathode chamber separated by a separator membrane; a cathode-side circulation line connected to the cathode chamber to circulate a cathode solution containing CO2; a catalyst supply device provided in the cathode-side circulation line to supply a CO production catalyst to the cathode solution; and a gas composition detection device configured to measure a ratio between CO and H2 in a production gas produced in the cathode chamber. At least one of control of a supply amount of the CO production catalyst by the catalyst supply device and control of a voltage applied between the anode and the cathode by the electrolysis device is performed to make a ratio of H2 to CO in the production gas be within a predetermined target range.