公开(公告)号：US20230363193A1

公开(公告)日：2023-11-09

申请号：US18134910

申请日：2023-04-14

Applicant: INDIAN OIL CORPORATION LIMITED

Inventor： Jyotiranjan OTA ,  Arjyabaran SINHA ,  Rahul MESHRAM ,  Samik Kumar HAIT ,  Kannan CHANDRASEKARAN ,  Sankara Sri Venkata RAMAKUMAR

IPC: H10K50/115 ,  C09K11/65 ,  G01N33/28

CPC classification number: H10K50/115 ,  C09K11/65 ,  G01N33/2882

Abstract: The present invention relates to a process for preparation of metal free, nontoxic, hydrocarbon fuel compatible fluorescent carbon quantum dots (CQD), which act as marker as well as lubricity improver. CQDs are highly stable in non-polar hydrocarbons, at ppm level exhibit distinct fluorescent color upon irradiation with light of specific wavelength and exhibit distinct spectral properties compared to non-polar base hydrocarbons.