murad bahadi, jumat salimon, darfizzi derawi.  (2021).  synthesis of di-trimethylolpropane tetraester-based biolubricant from elaeis guineensis kernel oil via homogeneous acid-catalyzed transesterification.  - renewable energy.  981-993. 

muhammad fadhli kamaruzaman, yun hin taufiq-yap, darfizzi derawi.  (2020).  green diesel production from palm fatty acid distillate over sba-15-supported nickel, cobalt, and nickel/cobalt catalysts.  - biomass and bioenergy.  1-8. 

khairul basyar baharudin, nurulhuda abdullah, taufiq yap yun hin, darfizzi derawi.  (2020).  renewable diesel via solventless and hydrogen-free catalytic deoxygenation of palm fatty acid distillate.  - journal of cleaner production.  1-11. 

moneer alrashidi, darfizzi derawi, jumat salimon, mohamad firdaus yusoff.  (2020).  an investigation of physicochemical properties of nigella sativa l. seed oil from al-qassim by different extraction methods.  - journal of king saud university.  3337-3342. 

khairul basyar baharudin, mahashanon arumugam, james hunns, adam f. lee, edwin mayes, yun hin taufiq-yap, karen wilson, darfizzi derawi.  (2019).  octanoic acid hydrodeoxygenation over bifunctional ni/al-sba-15 catalysts.  - catalysis science & technology.  1-8. 

murad bahadi, mohamad firdaus yusoff, jumat salimon, darfizzi derawi.  (2019).  optimization of response surface methodology by d-optimal design for synthesis of food-grade palm kernel based biolubricant.  - industrial crops and products.  1-12. 

khairul basyar baharudin, yun hin taufq-yap, james hunns, mark isaacs, karen wilson, darfzzi derawi.  (2019).  mesoporous nio/al-sba-15 catalysts for solvent-free deoxygenation of palm fatty acid distillate.  - microporous and mesoporous materials.  .