公开(公告)号：US20210009422A1

公开(公告)日：2021-01-14

申请号：US17041664

申请日：2019-03-25

Applicant: Agency for Science, Technology and Research

Inventor： Ming Lin ,  Yuanting Karen Tang ,  Hui Teng Casandra Chai ,  Ziyi Zhong ,  Ji Zhong Luo

IPC: C01B32/17 ,  C01B32/162

Abstract: A carbon purification method (10) and a carbon product are provided. The carbon purification method (10) includes providing (12) a carbon product having a catalyst content and/or impurities, performing (14) a hydrothermal acid digestion operation on the carbon product in an acid to dissolve the catalyst content and/or the impurities, and performing (16) a filtering operation to separate the dissolved catalyst content and/or the dissolved impurities from the carbon product.

公开(公告)号：US20200223696A1

公开(公告)日：2020-07-16

申请号：US16651107

申请日：2018-09-27

Applicant: Agency for Science, Technology and Research

Inventor： Ming Lin ,  Yuanting Karen Tang ,  Hui Teng Casandra Chai ,  Ziyi Zhong ,  Ji Zhong Luo

IPC: C01B32/162 ,  C01B32/168 ,  B01J23/755 ,  B01J23/00 ,  B01J37/04 ,  B01J37/03 ,  B01J37/02 ,  B01J37/08 ,  B01J37/18

Abstract: A method for the synthesis of carbon nanotubes from natural rubber, including providing a first material, the first material may include natural rubber or derivatives thereof, thermally decomposing the first material at a first temperature into an intermediate material, contacting the intermediate material with a catalyst, treating the intermediate material in contact with the catalyst at a second temperature, for forming carbon nanotubes. Adjusting an average characteristic of resulting nanotubes, including carrying out the synthesis method as a reference method and for decreasing the average diameter of the nanotube: decreasing the second temperature and/or decreasing the reaction time and/or increasing the concentration of H2 in the forming gas in relation to the reference method. Or, for increasing the average diameter of the nanotube: increasing the second temperature and/or increasing the reaction time and/or decreasing the concentration of H2 in the forming gas in relation to the reference method.

公开(公告)号：US11814290B2

公开(公告)日：2023-11-14

申请号：US16651107

申请日：2018-09-27

Applicant: Agency for Science, Technology and Research

Inventor： Ming Lin ,  Yuanting Karen Tang ,  Hui Teng Casandra Chai ,  Ziyi Zhong ,  Ji Zhong Luo

IPC: C01B32/162 ,  C01B32/168 ,  B01J23/00 ,  B01J23/755 ,  B01J37/02 ,  B01J37/03 ,  B01J37/04 ,  B01J37/08 ,  B01J37/18

CPC classification number: C01B32/162 ,  B01J23/005 ,  B01J23/755 ,  B01J37/0236 ,  B01J37/036 ,  B01J37/04 ,  B01J37/088 ,  B01J37/18 ,  C01B32/168 ,  C01B2202/06 ,  C01B2202/36 ,  C01P2002/72 ,  C01P2002/88 ,  C01P2004/04

Abstract: A method for the synthesis of carbon nanotubes from natural rubber, including providing a first material, the first material may include natural rubber or derivatives thereof, thermally decomposing the first material at a first temperature into an intermediate material, contacting the intermediate material with a catalyst, treating the intermediate material in contact with the catalyst at a second temperature, for forming carbon nanotubes. Adjusting an average characteristic of resulting nanotubes, including carrying out the synthesis method as a reference method and for decreasing the average diameter of the nanotube: decreasing the second temperature and/or decreasing the reaction time and/or increasing the concentration of H2 in the forming gas in relation to the reference method. Or, for increasing the average diameter of the nanotube: increasing the second temperature and/or increasing the reaction time and/or decreasing the concentration of H2 in the forming gas in relation to the reference method.