Catalytic process for the production of aromatic hydrocarbons from used cooking oil

US12264117B2 · kind B2 · utility

Assignee

• COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH AN INDIAN REGISTERED BODY INCORPORATED UNDER THE REGN. OF SOC. ACT (ACT XXI OF 1860) · IN

Inventors

• Bipul Sarkar · Bengaluru, IN
• Om Vir Singh · Gairsain, IN
• Ankit Agrawal · Gairsain, IN
• Anjan Ray · Dehradun, IN
• Sanat K. Kumar · Gairsain, IN
• Bhanu Prasad Vempatapu · Gairsain, IN
• Jagdish Kumar · Dehradun, IN

Key dates

• Filing date: Jul 19, 2023
• Grant date: Apr 1, 2025
• Expiry date: Sep 28, 2043

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2529/48
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention is related to a process for the conversion of used cooking oil into aromatics (BTEX) hydrocarbon as petrochemical building blocks. The process provides an aromatic rich hydrocarbon from used cooking oil in the presence and absence of steam/hydrogen over supported bimetallic alumina-silicates zeolites. The catalyst contains no precious metal entities and may contain one metal form zinc (Zn), a second metal (X), comprising at least one selected from cobalt (Co), gallium (Ga), chromium (Cr), Iron (Fe) and third elements from cerium (Ce), boron (B) supported on alumina-silicates zeolites. The present invention relates to a catalyst excluding novel metals to produce aromatics in a continuous fixed bed reactor system under atmospheric pressure. More particularly, the present invention relates to a low-temperature process to produce aromatic over alumina-silicates zeolites. The process provides used cooking oil conversion of 84-89% with aromatic selectivity of 87-91%.