公开(公告)号：EP4011825A1

公开(公告)日：2022-06-15

申请号：EP20850574.3

申请日：2020-08-05

申请人： Nippon Light Metal Company, Ltd. ,  National Institute Of Advanced Industrial Science and Technology

发明人： SUGITA, Kaoru ,  Oota, Yuji ,  ABE, Rene Yo ,  HACHISU, Takuma ,  MATSUNAGA, Takehiro

IPC分类号： C01B6/21 ,  C01B3/00

摘要： A sodium borate, aluminum powder and fluoride powder are mixed together in a hermetic vessel filled with hydrogen gas, and the mixture is reacted at not less than 410°C and not more than 560°C to produce sodium borohydride.

公开(公告)号：EP4289784A1

公开(公告)日：2023-12-13

申请号：EP22749559.5

申请日：2022-01-25

申请人： Nippon Light Metal Company, Ltd.

发明人： SUGITA, Kaoru ,  OOTA, Yuji ,  ABE, Rene Yo

IPC分类号： C01B6/21

摘要： Provided is a method for producing sodium borohydride. An aluminum powder and a fluoride powder are mixed, and a pretreatment thereof is carried out at 100°C or higher and 330°C or lower; and after the pretreatment, a fluoride powder and a sodium borate are added and mixed, and the resulting mixture is charged into a tightly sealed vessel; and then after a hydrogen gas is introduced thereto, a heat treatment is carried out by heating the tightly sealed vessel at 490°C or higher and 560°C or lower.

公开(公告)号：EP4289783A1

公开(公告)日：2023-12-13

申请号：EP22749558.7

申请日：2022-01-25

申请人： Nippon Light Metal Company, Ltd.

发明人： SUGITA, Kaoru ,  OOTA, Yuji ,  ABE, Rene Yo

IPC分类号： C01B6/21

摘要： Provided is a method for producing sodium borohydride. At a time when a sodium borate, an aluminum powder, and a fluoride powder are mixed and caused to react in a tightly sealed vessel filled with a hydrogen gas at a temperature of 560°C or lower, stirring using a stirrer is carried out in the tightly sealed vessel, and a stirring height ratio (X) expressed by a following formula (I) is 75% or more, in which (a) is a minimum clearance between the stirrer and the lowest part of the tightly sealed vessel in a gravity direction, and (b) is a raw material charged height when a raw material is charged into the tightly sealed vessel: X = b − a / b × 100

公开(公告)号：EP4011826A1

公开(公告)日：2022-06-15

申请号：EP20850821.8

申请日：2020-08-05

申请人： Nippon Light Metal Company, Ltd. ,  National Institute Of Advanced Industrial Science and Technology

发明人： SUGITA, Kaoru ,  Oota, Yuji ,  ABE, Rene Yo ,  HACHISU, Takuma ,  MATSUNAGA, Takehiro

IPC分类号： C01B6/21 ,  C01B3/00

摘要： In a hermetic vessel filled with hydrogen gas, a sodium borate and aluminum powder are reacted at not less than 400°C and not more than 560°C while performing stirring to produce sodium borohydride with the molar ratio of sodium contained in the sodium borate being larger than 0.5 relative to boron contained in the sodium borate.