TPR-MS Insitu analysis for optimum CNT of Fe &

Ni/Carbon system

TPR-MS Insitu analysis for optimum CNT of Fe &

Ni/Carbon system

Ali Rinaldi, Norly Abd, Imran Syakir

Ali Rinaldi, Norly Abd, Imran Syakir

Introduction & BackgroundIntroduction & 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.

•

objectivesobjectives• 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 setupReactor setup

H2

C2H4

N2/Ar

Pre-treatment oven

MS/Vent

Pulse set up

Calc/red gases

AdvantagesAdvantages• 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 inGas out

AimsAims• 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.

AimsAims• 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; Fen+)

• Measure the adsorption energy of H2, C2H4 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; Fen+)

• Measure the adsorption energy of H2, C2H4 for catalyst calcine and reduced at different conditions.

ConclusionConclusion

Work plan?Work plan?

• In progress• In progress