NC200 Work Progress – Improving Drying Technique Carbon Team Imran Syakir Mohamad, Norli Abdullah

Objective Improve yield & quality of CNF/CNT produced –Better dispersion of CNF/CNT –High CNF/CNT yield –CNF  CNT

NC200 Work Flow Diagram SynthesisUTP Parameter Precursor (Fe) Excess Solvent AcetateNitrate Wt % Cat /9mL 1/3mL %H2 loadingRed. Temp ( o C) 5%10%20% Red. Time (min) Drying Technique Convectional OvenDrynoza To reduce drying time To Improve drying process for better catalyst dispersion onto substrate To optimize the optimum temp for Fe reduction To improve yield & quality of CNF/CNT To improve yield & quality of CNF/CNT

Drying Technique Synthesis UTP Parameter Precursor (Fe) Excess Solvent AcetateNitrate Wt % Cat /9mL 1/3mL %H2 loadingRed. Temp ( o C) 5%10%20% Red. Time (min) Drying Technique Convectional OvenDrynoza

Problem Bad catalyst dispersion Objective To Improve drying process for better catalyst dispersion onto substrate

Previous Tech –Oven –45 o C, Horizontal ventilation New Tech –Drynoza –RT, vertical ventilation

Result Catalyst Dispersion Improved No sign of track of dried Fe salt deposited on the bottles.

WEIGHT % CAT. LOADING & % H2 LOADING Synthesis UTP Parameter Precursor (Fe) Excess Solvent AcetateNitrate Wt % Cat /9mL 1/3mL %H2 loadingRed. Temp ( o C) 5%10%20% Red. Time (min) Drying Technique Convectional OvenDrynoza

SEM (Diff. wt%, 5% H2) 1 wt % 3 wt % 5 wt % D increased

SEM (1 wt%, different H2 loading) 5 % 10 % 20 %In Progress Yield increased Better Dispersion CalcinationCalcination ReductionReduction GrowthGrowth CoolingCooling 30 min30 min 44 min44 min 60 min60 min 10 min10 min 60 min60 min 100 min100 min 60 min60 min 120 min120 min 134 min134 min

SEM (3 wt%), different H2 loading 5 % 10 % 20 %In Progress Yield increased Better Dispersion CalcinationCalcination ReductionReduction GrowthGrowth CoolingCooling 30 min30 min 44 min44 min 60 min60 min 10 min10 min 60 min60 min 100 min100 min 60 min60 min 120 min120 min 134 min134 min

SEM (5 wt%), different H2 loading 5 % 10 % 20 %In Progress Yield increased Better Dispersion CalcinationCalcination ReductionReduction GrowthGrowth CoolingCooling 30 min30 min 44 min44 min 60 min60 min 10 min10 min 60 min60 min 100 min100 min 60 min60 min 120 min120 min 134 min134 min CNF+CNT produced

SEM 10% H2 loading 5wt % 1wt % 3wt % D increased Mixture CNF+CNT produced CNF produced

NC2FA9 (5wt%, 10%H2)

96nm

NC2FA9 (5wt%, 10%H2) 65nm 30nm

Future Plan Increase % H2 loading to 20% in the reduction process Increase reduction time to 90 min and 120 min Synthesis UTP Parameter Precursor (Fe) Excess Solvent AcetateNitrate Wt % Cat /9mL 1/3mL %H2 loadingRed. Temp ( o C) 5%10%20% Red. Time (min) Drying Technique Convectional OvenDrynoza