US 12,281,015 B2
Continuous manufacture of graphenic compounds
Yong Lak Joo, Ithaca, NY (US); Mohammed Alamer, Ithaca, NY (US); and Brian Williams, Ithaca, NY (US)
Assigned to Cornell University, Ithaca, NY (US)
Appl. No. 17/284,219
Filed by CORNELL UNIVERSITY, Ithaca, NY (US)
PCT Filed Oct. 9, 2019, PCT No. PCT/US2019/055469
§ 371(c)(1), (2) Date Apr. 9, 2021,
PCT Pub. No. WO2020/077004, PCT Pub. Date Apr. 16, 2020.
Claims priority of provisional application 62/743,922, filed on Oct. 10, 2018.
Prior Publication US 2021/0340013 A1, Nov. 4, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C01B 32/19 (2017.01); B01J 19/02 (2006.01); B01J 19/28 (2006.01)
CPC C01B 32/19 (2017.08) [B01J 19/02 (2013.01); B01J 19/28 (2013.01); B01J 2219/00033 (2013.01); B01J 2219/0254 (2013.01); B01J 2219/0286 (2013.01); B01J 2219/0295 (2013.01); B01J 2219/1943 (2013.01); C01B 2204/04 (2013.01); C01B 2204/30 (2013.01); C01B 2204/32 (2013.01); C01P 2002/72 (2013.01); C01P 2002/78 (2013.01); C01P 2002/82 (2013.01); C01P 2004/03 (2013.01)] 55 Claims
OG exemplary drawing
 
1. A process for manufacturing a graphenic compound the process comprising:
a. injecting a first stock into a first inlet of a continuous or semi-continuous reactor, the first stock comprising graphite and optionally one or more additives comprising a surfactant and/or thickening agent,
wherein the continuous or semi-continuous reactor has a flow from the first inlet to the outlet, the flow being a non-vortex flow, or the continuous reactor is configured to produce a helical laminar or cylindrical Couette flow; and
b. collecting the graphenic compound from an outlet of the continuous or semi-continuous reactor, the graphenic compound being collected downstream from the first inlet, and wherein the graphenic compound comprises:
i) graphene, wherein at least 50% of the graphite is converted to graphene;
ii) only graphene oxide collected after 1 minute comprising less than 1 wt. % graphite; or
iii) reduced graphene oxide having a C/O atomic ratio of at least 10.