Process for preparation of highly coordinated sulfated mixed metal oxide catalyst having high crushing strength

US11731121B2 · kind B2 · utility

Assignees

• Viridis Chemicals Private Limited · US
• Indian Oil Corporation Limited · IN

Inventors

• Chaitanya Sampara · Mumbai, IN
• Pushkar VARSHNEY · Faridabad, IN
• Reshmi Manna · Barwala, IN
• Saravanan Subramani · Sindhar, IN
• Madhusudan Sau · Barwala, IN
• Debasis Bhattacharyya · Faridabad, IN
• Sankara Sri Venkata RAMAKUMAR · Faridabad, IN

Key dates

• Filing date: Feb 18, 2021
• Grant date: Aug 22, 2023
• Expiry date: Jun 18, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G45/62
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention provides a process of preparing a high coordination sulfated mixed metal oxide catalyst. The process comprises mixing specific ratios of alumina and zirconia mixtures at specific particle size limits which do not exceed 37 μm, in the presence of a combination of α-amino acids, i.e., non-polar side chains and basic side chains having molecular weight less than 250, nitric acid (HNO3) and sulfuric acid (H2SO4) at a pH range of 1.5 to 3.8 at temperatures below 30° C. The catalysts have a high conversion towards hydrocarbon isomerization reaction while concurrently having crushing strength in range of 2.0 daN and 5.0 daN, allowing for efficient commercial application.