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source of pentosans and furfural, TLC and infrared (FT-IR) spectroscopy, X-ray diffraction
conventional chemical test further confirmed the (XRD), thermo gravimetric analysis (TGA) and
presence of furfural in extracted solution. differential thermal analysis (DTA). The surface
area of the Al-sorbent was determined by
067 SHAJAHAN, M. (School of Chemical adsorption of melhylene blue from aqueous
Engineering and Technology, Chonbuk National solution. The results of FT-IR, XRD, TGA, DTA
University, Republic of Korea) & KIBRIA, analyses of the Al-sorbent are in good agreement
A.K.M.F. (Chemistry Division, Atomic Energy with literature data reported for boehmite type of
Centre, Dhaka). Growth Phenomena of Carbon aluminum oxyhydroxide [AIO(HO) or
Nanotubes Over Co-Mo/MgO Catalyst from the A1 2O 3.xH 2O, 1<x<1.5] with differing water
Decomposition of Acetylene. Bang. J. Sci. Ind. content and crystalline size.
Res., 2007, 42 (2), 105-114.
069 TAREQUE, M.H.; ISMAIL, M.;
Carbon nanotubes (CNTs) were grown over CHAKRAVARTY, P.; RANA, A.A. & SAHA,
12Mo:18Co:70MgO catalyst at 500, 700 and 900° M. (Dept of Applied Chemistry and Chemical
C from C 2H 2 decomposition for 30 minutes using Technology, Dhaka University, Dhaka).
chemical vapor deposition (CVD) method. The Benzylation of Phenol with Benzyl Alcohol in the
highest yield of CNTs was observed at 700° C. Presence of Sulphuric Acid. Bang. J. Sci. Ind. Res.,
The lowest diameter of CNTs appeared at 900° C. 2006, 41 (3&4), 257-261.
Quadruple mass spectroscopy (QMS) study on the
species generated from the catalytic decomposition Benzylphenol has been produced in high yield by
of C 2H 2 identified that the catalyst consumed C the benzylation of phenol with benzyl alcohol in
species during the growth stage of CNTs. The the presence of sulphuric acid. The effect of
consumption period of C varied with temperature variation of temperature, molar ratio of phenol to
and showed a close relationship with the carbon benzyl alcohol, time of reaction, concentration and
yield. At 500, 700 and 900° C, the consumption amount of sulphuric acid have been studied on the
periods were 12, 35 and 20 inin, respectively, and reaction.
the corresponding carbon yields were 7, 385 and
89%. From the XRD analysis of catalyst surface, 070 TAREQUE, M.H.; ISMAIL, M. ;
and XRD and Raman analysis of the CNTs, it was ISLAM, S.T.A; KAMRUZZAMAN, M. &
realized that Co particles released from Co 30 4, SAHA, M. (Dept. of Applied Chemistry and
CoMoO 4 and CoO-MgO were participated in Chemical Technology, Dhaka University, Dhaka).
CNTs growth at 500, 700 and 900° C, respectively. Reaction of Xylenes with Benzyl Chloride in the
The Co particles acted as the transporting medium Presence of Anhydrous Aluminium Chloride.
of carbon to grow CNTs. The tubes are MWNTs Bang. J. Sci. Ind. Res., 2006, 41 (3 & 4), 251-256.
and grown by tip growth mode.
Reactions of ortho meta- and para-xylenes with
068 SIMOL, H.A. ; MOLLAH, M.Y.A. benzyl chloride in the presence of anhydrous
(Dept. of Chemistry, University of Dhaka, Dhaka) aluminium chloride as catalyst have been studied.
& MOTTALIB, M.A. (Bangladesh College of The effects of variation of temperature, molar ratio
Leather Technology, Hazarbag, Dhaka). of xylene to benzyl chloride, amount of catalyst
ELECTROGENERATION OF AI-OXYHYDROXIDE and reaction time on the reactions have been
AND ITS CHARACTERIZATION. J. Bang. investigated.
Acad. Sci., 2007, 31 (1), 143-149.
548 CHEMISTRY : MINERALOGICAL
Al-sorbent was prepared by electrochemical SCIENCES
method using a two-electrode monopolar
electrochemical (EC) cell with Al as 'sacrificial 071 BEGUM, F. (Dept. of Chemistry, Dhaka
anode' and sodium chloride as internal electrolyte. University, Dhaka). X-RAY CRYSTAL
The sample was characterized by Fourier transform STRUCTURES OF METAL COMPLEXES OF
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