US 11,814,290 B2
Processes for production of carbon nanotubes from natural rubber
Ming Lin, Singapore (SG); Yuanting Karen Tang, Singapore (SG); Hui Teng Casandra Chai, Singapore (SG); Ziyi Zhong, Singapore (SG); and Ji Zhong Luo, Singapore (SG)
Assigned to Agency for Science, Technology and Research, Singapore (SG)
Appl. No. 16/651,107
Filed by Agency for Science, Technology and Research, Singapore (SG)
PCT Filed Sep. 27, 2018, PCT No. PCT/SG2018/050491
§ 371(c)(1), (2) Date Mar. 26, 2020,
PCT Pub. No. WO2019/066727, PCT Pub. Date Apr. 4, 2019.
Claims priority of application No. 10201707943S (SG), filed on Sep. 27, 2017.
Prior Publication US 2020/0223696 A1, Jul. 16, 2020
Int. Cl. C01B 32/162 (2017.01); C01B 32/168 (2017.01); B01J 23/00 (2006.01); B01J 23/755 (2006.01); B01J 37/02 (2006.01); B01J 37/03 (2006.01); B01J 37/04 (2006.01); B01J 37/08 (2006.01); B01J 37/18 (2006.01)
CPC C01B 32/162 (2017.08) [B01J 23/005 (2013.01); B01J 23/755 (2013.01); B01J 37/0236 (2013.01); B01J 37/036 (2013.01); B01J 37/04 (2013.01); B01J 37/088 (2013.01); B01J 37/18 (2013.01); C01B 32/168 (2017.08); C01B 2202/06 (2013.01); C01B 2202/36 (2013.01); C01P 2002/72 (2013.01); C01P 2002/88 (2013.01); C01P 2004/04 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for synthesis of carbon nanotubes from natural rubber, comprising:
providing a first material including a natural rubber or derivatives thereof;
thermally decomposing the first material at a first temperature into an intermediate material, wherein the first temperature is selected from about 200° C. to about 500° C.;
contacting the intermediate material with a catalyst; and
thermally treating the intermediate material in contact with the catalyst at a second temperature, for forming carbon nanotubes,
wherein the first material comprises less than 10 weight % of vulcanized rubber, or wherein the first material comprises less than 10 weight % of vulcanized rubber and wherein the natural rubber is one or more of latex and coagulated latex.