Steam reforming of phenol toward cleaner hydrogen production over bimetallic Ni/Ti modified zinc titanate perovskite in tandem with a kinetic model development

Khaled S. Baamran, Muhammad Tahir

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

Hydrogen as a clean energy carrier with high heat combustion and zero environmental impacts is an attractive alternative to fossil fuels. In this study, NiO/TiO2 modified ZnTiO3 perovskite (NTZ) with high reducibility catalyst was designated by co-precipitation method and examined in the reaction of steam reforming of phenol (SRP) for H2 production. The activity tests for SRP were carried out in a fixed bed reactor (FBR) under different operating conditions. The NTZ-composite consisting of NiO/TiO2 loaded ZnTiO3 perovskite achieved the highest yield of H2 and phenol conversion of ~76 and 90%, respectively, with excellent durability and time on stream (50 h) stability without obvious deactivation. The high exposed active sites of NiO/TiO2 metals over the bi-metal support (ZnTiO3) and the metal-support interaction significantly improved the catalytic performance. The products distribution of H2, CO2, and CO as a measure of the dominant reactions; SRP, water gas shift (WGS), and reverse water gas shift (RWGS) were correlated to kinetic models and developed according to Langmuir-Hinshelwood-Hougen-Watson (LHHW) expressions. LHHW model accurately fitting the experimental results with surface reactions as the kinetic limitations. SRP reaction revealed the highest rate constant of 21.70 mol g-cat−1 h−1 atm−1 with 39.96 kJ mol-1 activation energy. NTZ is a promising catalyst for the SRP reaction toward H2 production with minimum kinetic limitations and would be promising in the clean energy production and other environmental applications.

Original languageEnglish
Article number127519
JournalJournal of Cleaner Production
Volume311
DOIs
Publication statusPublished - Aug 15 2021

Keywords

  • Hydrogen production
  • Kinetic model
  • Phenol
  • Steam reforming technology
  • Zinc titanate perovskite

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • General Environmental Science
  • Strategy and Management
  • Industrial and Manufacturing Engineering

Fingerprint

Dive into the research topics of 'Steam reforming of phenol toward cleaner hydrogen production over bimetallic Ni/Ti modified zinc titanate perovskite in tandem with a kinetic model development'. Together they form a unique fingerprint.

Cite this