Dr Juan Joon Ching

Lecturer

Catalysis (Heterogeneous catalyst)

The main research interests focus on the development of novel heterogeneous catalyst for various reactions and the reaction mechanisms leading to a better understanding of the catalyst behaviour. To promote green chemistry, attempts are being made to reduce/eliminate the use of solvent in the reaction media.

Juan JC, Yarmo MA, Daud JM (2008) Direct analysis of native poly (ethylene glycol) by reversed-phase HPLC. Malaysian J Chem (in press)

Juan JC, Zhang JC, Jiang Y, Cao, W, Yarmo MA (2007) The zirconium sulfate microcrystal structure in relation to their activity in the esterification. J Mol Catalysis A: Chemical 272: 91-95

Juan JC, Zhang JC, Yarmo MA (2007) 12-Tungstophosphoric acid supported on MCM-41 for esterification of fatty acid under solvent-free condition. J Mol Catalysis A: Chemical 267: 265-271

Juan JC, Jiang Y, Meng X, Cao W, Yarmo MA, Zhang JC (2007) Supported zirconium sulfate on carbon nanotubes as water-tolerant solid acid catalyst. Material Res Bull 42: 1278-1285

Juan JC, Zhang JC, Yarmo MA (2006) 12-Tungstophosphoric acid entrapped on mesoporous silica via sol gel technique. Adv Materials Res 11-12: 69-72

Juan JC, Zhang JC, Jiang Y, Cao W, Yarmo MA (2007) Zirconium sulfate supported on activated carbon as catalyst for esterification of oleic acid by n-butanol under solvent-less conditions. Catalysis Lett 117: 153-158

Juan JC, Zhang JC, Yarmo MA (2007) Structure and reactivity of silica-supported zirconium sulfate for esterification of fatty acid under solvent-free condition. Appl Catalysis A: General 332: 209-215.

Jiang Y, Juan JC, Li X, Cao W, Zhang JC (2007) Preparation of butyl acrylate catalyzed by a hydrophobic solid acid catalyst-H 3PW 12O 40 supported on HZSM-5. J Beijing Univ Chem Technol 34: 258-262

Lv YG, Zhang JC, Cao W, Juan JC, Zhang FJ, Xu Z (2007) Synthesis and characteristics of a novel rare earth complex of Eu(TTA) 2(N-HPA)Phen. J Photochem Photobiol A: Chemical 188: 155-160

Lv YG, Zhang JC, Cao W, Juan JC, Zhang FJ, Xu Z (2006) Enhanced luminescence of Eu 3+ by Y 3+ in ternarycomplexes EuxY1-x(TTA)3Dipy. Spectrochim Acta Part A: Mol Biomol Spectr 68: 382-386.

Yarmo MA, Shariff RSR, Omar SR, Juan JC, Haron R (2006) New perspective in recent solid acid catalyst. Material Sci Forum 517: 117-122

Jiang Y, Juan JC, Meng X, Cao W, Yarmo MA, Zhang JC (2007) Preparation and catalytic application of novel water tolerant solid acid catalysts of zirconium sulfate/HZSM-5. Chem Res Chinese Univ 23: 349-354

Shariff RSR, Juan JC, Indra MS, Zaini MF, Omar SR, Ramli A, Yarmo MA (2005) Characterization of modified ITQ-6 structure and surface properties. Malaysian J Anal Sci 9: 219-223

Juan JC, Zhang JC, Jiang Y, Cao W, Yarmo MA (2006) Esterification of fatty acid under solvent-less condition. China Patent CN 2006100807209 (Pending).

Developing heterogeneous catalyst such as solid acid/base or enzyme catalyst for transesterification of edible/inedible oil to produce biodiesel.

Juan JC (2008) Graduate with excellent thesis writing. Universiti Kebangsaan Malaysia (National University of Malaysia), Malaysia, 14 May 2008