TEMPERATURE PROGRAMMED CHARACTERIZATION OF SPENT SYNGAS CATALYSTS (NiO/MgOAl203)

• Main Author: Ramlan, Rozalina Shiela
• Format: Final Year Project
• Language: English
• Published: Universiti Teknologi Petronas 2005
• Subjects: TP Chemical technology
• Online Access: http://utpedia.utp.edu.my/8115/1/2005%20-%20TEMPERATURE%20PROGRAMMED%20CHARACTERIZATION%20OF%20SPENT%20SYNGAS%20CATALYSTS%20%28NiOMgOAl203%29.pdf; http://utpedia.utp.edu.my/8115/

This research project is conducted to determine the properties of fresh and spent NiO/ MgOAl203, which is syn gas catalyst by using temperature programmed method. The main deactivation process on syngas catalyst is coke deposition, which can be observed on the spent catalyst. The scope of study includes a thorough literature research onnickel based catalyst for steam reforming from various sources ofjournals through internet and books. The temperature programmed method including Temperature Programmed Reduction (TPR) and Temperature Programmed Oxidation (TPO). The author has utilized several methods such as TPR, TPO, SEM/EDX and FTIR, which led to significant findings in this area of study. For TPR result, there are three reduction peaks for fresh catalyst (230°C, 445°C and 605 °C) and four reduction peaks for spent catalyst (200°C, 460°C, 530°C and 800°C). From FTIR analysis, the functional groups onfresh and spent catalyst have been identified. The -OH functional group is identified in fresh and spent catalyst but nitrate group only found in fresh catalyst. EDX result show loss in nickel content for spent catalyst compare to fresh catalyst. This loss is due to sintering of catalyst. Two sets of regeneration procedure has been design; regeneration at 400°C and 600°C, both in oxygen atmosphere.