SinoGreenTech Academic Portal
Official PDF TranslationJournal of Fuel Chemistry and Technology

Mechanism of Ce/La/Zr doping on the structure and anti-coking performance of Ni/MgO-MgAl2O4 catalyst

Authors: ZHANG Guopei; WANG Cong; ZHANG Xiaoyang; LI Zhaomin

DOI: 10.1016/S1872-5813(26)60672-XStatus: Verified Translated Edition
Sponsored AdvertisementAd Placement Area
reCAPTCHA Bot Shield Active

Preparing Secure Academic Download

Verifying human reader & generating high-resolution document...

Verifying Document Integrity15s remaining
← Back to Article
Protected by Google reCAPTCHA v3.PrivacyTerms
Sponsored ContentAdSense In-Feed Ad Slot

Key Findings in This Report

• • Optimal Ni loading of 12.5% maximizes CH4 and CO2 conversions; excessive 15.0% loading causes activity loss due to Ni agglomeration and pore degradation, underscoring the need for precise metal loading in industrial catalyst formulation. • • Promoter incorporation increases surface active oxygen species (Oβ) to ~60%–68%, enhancing CO2 adsorption/activation and reducing carbon deposition, critical for maintaining catalyst longevity in high-temperature DRM operations. • • After 20 h DRM, Ce-promoted catalyst exhibits minimal Ni particle growth from 6.23 to 8.07 nm (Δ1.84 nm), compared to >5 nm for unmodified catalyst, demonstrating superior sintering resistance essential for extended industrial campaigns. • • Promoter-modified catalysts show substantially reduced carbon deposition and lower carbon graphitization, directly addressing the primary deactivation mechanism in DRM and improving process economics by reducing regeneration frequency.