Natural marble powder-modified SBA-15 as an efficient catalyst for the selective production of 2-methyl-2-pentenal from n-propanal self-aldol condensation

Hari Prasad Reddy Kannapu, Jyothi Yadagiri, Surendar Moogi, Eilhann E. Kwon, Su Shiung Lam, Young Kwon Park

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

In this study, conversion of n-propanal to produce 2-methyl-2-pentenal (C6 compound, a fuel range precursor) was carried out using AMW-SBA-15 catalyst synthesized from activated marble waste (AMW) consisting mainly of Ca2+ and Mg2+ ions. AMW-SBA-15 catalysts with different weight ratios of AMW/Si (6, 12, and 18 wt. %) were prepared using single step sol-gel method. The catalytic activities were examined using a fixed bed continuous reactor over temperature ranging from 350−425 °C under atmospheric pressure. The 12AMW-SBA-15 catalysts showed superior catalytic performance with n-propanal conversion of 75 % and C-6 compound selectivity of 81 % at 375 °C without the need of deactivation for 12 h. To elucidate the structure-activity relationship, all catalysts were characterized using a variety of techniques. The superior performance of 12AMW-SBA-15 was ascribed to the high surface area and smaller particle size as well as the high hydrophobicity, which controlled the hydration of Ca2+/Mg2+ ions during the reaction.

Original languageEnglish
Pages (from-to)448-456
Number of pages9
JournalJournal of Industrial and Engineering Chemistry
Volume94
DOIs
StatePublished - 25 Feb 2021

Keywords

  • 2-methyl-2-pentenal
  • AMW-SBA-15
  • Bio-oil
  • Hydrophobicity
  • n-propanal

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