TPR-MS Insitu analysis for optimum CNT of Fe & Ni/Carbon system Ali Rinaldi, Norly Abd, Imran Syakir

Introduction & Background The complication of metal-carbon support interaction further complicates the study of growing CNTs on Activated carbon. The complication involves gasification and carbon contamination that changes the catalyst activity towards CNTs growth. In addition to the already-complicated CNTs growth mechanistic study, a better experimental and reactor design is required to acquire some knowledge on the system. The complication of metal-carbon support interaction further complicates the study of growing CNTs on Activated carbon. The complication involves gasification and carbon contamination that changes the catalyst activity towards CNTs growth. In addition to the already-complicated CNTs growth mechanistic study, a better experimental and reactor design is required to acquire some knowledge on the system.

objectives Simplicity in preparing and loading the samples. Quasi- insitu method in analyzing the effect of temperature, gas composition, time to quality of CNTs The TPR set up allows air-tight system The MS detector permits high precision gas reactants and products analysis. Compatibility with carbon groups experiment with HPDSC in Berlin. Simplicity in preparing and loading the samples. Quasi- insitu method in analyzing the effect of temperature, gas composition, time to quality of CNTs The TPR set up allows air-tight system The MS detector permits high precision gas reactants and products analysis. Compatibility with carbon groups experiment with HPDSC in Berlin.

Reactor setup H2 C2H4 N2/Ar Pre-treatment oven MS/Vent Pulse set up Calc/red gases

Advantages Practical sample preparation Require only small amount of sample Free from gas diffusion problem Allow continuous monitoring of feedstock gasses and products with MS and/or TCD detectors. Gas is heated before contacting the sample Allow weight measurement after reaction. Practical sample preparation Require only small amount of sample Free from gas diffusion problem Allow continuous monitoring of feedstock gasses and products with MS and/or TCD detectors. Gas is heated before contacting the sample Allow weight measurement after reaction. Gas in Gas out

Aims To correlate Surface functional groups (SOFG) decomposition of Act carbon with activity of the catalyst for CNTs synthesis. With a SOFG-free support (eg graphite) study the effect of pulsed CO/CO2 towards the activity of catalyst for CNTs synthesis. To correlate Surface functional groups (SOFG) decomposition of Act carbon with activity of the catalyst for CNTs synthesis. With a SOFG-free support (eg graphite) study the effect of pulsed CO/CO2 towards the activity of catalyst for CNTs synthesis.

Aims Fast study of calcination and/or reduction conditions effect towards the catalyst activity for CNTs synthesis. Understand the effect of metal catalyst oxidation state to the CNTs synthesis (for multivalent metals; Fe n+ ) Measure the adsorption energy of H 2, C 2 H 4 for catalyst calcine and reduced at different conditions. Fast study of calcination and/or reduction conditions effect towards the catalyst activity for CNTs synthesis. Understand the effect of metal catalyst oxidation state to the CNTs synthesis (for multivalent metals; Fe n+ ) Measure the adsorption energy of H 2, C 2 H 4 for catalyst calcine and reduced at different conditions.

Conclusion

Work plan? In progress