Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
24
2
2005
06
01
Experimental Survey on Microwave Drying of Porous Media
1
10
EN
Akbar
Khodaparast Haghi
Faculty of Engineering, University of Guilan, P.O. Box 41635- 3756, Rasht, I. R. IRAN
akhaghi@yahoo.com
Hossein
Ghanadzadeh
0000-0002-9181-8961
Faculty of Engineering, University of Guilan, P.O. Box 41635- 3756, Rasht, I. R. IRAN
hggilani@guilan.ac.ir
Daniel
Rondot
L'Université de Franche Comte Besancon, FRANCE
10.30492/ijcce.2005.7789
<em>The cost of drying carpet which is done toward the end of the manufacturing process, is quite high. The carpet industry has been using convection drying for many years. Little attention has been given to quantifying the effect of microwave power during the drying of carpet. An experimental system was developed whereby air was introduced into the cavity of a domestic microwave oven. The results indicated that microwave power levels and sample specifications are the most important parameters, with statistically significant effects on the drying constants.</em>
Microwave drying,Moisture content,Porous media,Tufted textile
https://ijcce.ac.ir/article_7789.html
https://ijcce.ac.ir/article_7789_66261b8d8e8b789028fae4dd1f6d875f.pdf
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
24
2
2005
06
01
Synthesis and Characterization of PMMA with 4 - Carbazole Chromophore Substitution
11
15
EN
Mansoor
Keyanpour Rad
Materials and Energy Research Center, P. O. Box 14155-4777, Tehran, I. R. IRAN
mankian_rad@yahoo.com
10.30492/ijcce.2005.8119
<em>A new carbazole- containing polymer has been synthesized for further photophysical studies. Efficient synthesis of the substituted methyl methacrylate has been accomplished via microwave assisted synthesis of 1 - chloro - 4</em><em>-</em><em>carboxy -</em><em>5,</em><em>6, 7, 8- tetrahydrocarbazole followed by further steps, such as reduction of the 4-substituted methyl carboxylate, dechlorination of the ring and at last, the reaction of the 4 - hydroxymethyl - 9 - ethyl carbazole with methacryloyl chloride. </em><em>The resulting monomer was then polymerized free-radically to form the polymer, having a distribution M<sub>w</sub>/M<sub>n</sub> of 2.6.</em>
Microwave promoted synthesis,Carbazole-containing polymethylmethacrylate,Carbazole chromophores,4- substituted carbazoles,Free radical polymerization
https://ijcce.ac.ir/article_8119.html
https://ijcce.ac.ir/article_8119_72f68af008689ba09ce286b81c71f6eb.pdf
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
24
2
2005
06
01
The Study of Electrochemical Behavior of Mono and Dinuclear Co(III) Complexes, trans-[pyCo((DO)(DOH)pn)(L)]PF6 and [{pyCo((DO)(DOH)pn)}2(μ-dicyd)](PF6)2
17
20
EN
Ali Reza
Rezvani
Chemistry Department, Sistan and Baluchestan University,
P.O. Box 98135-674, Zahedan I. R. IRAN
rezvani2001ir@yahoo.ca
Hassan
Hadadzadeh
Chemistry Department, Sistan and Baluchestan University,
P.O. Box 98135-674, Zahedan I. R. IRAN
hadad@cc.iut.ac.ir
10.30492/ijcce.2005.8120
<em>Electrochemical behavior of the new mono and dinuclear Co (III) complexes of the types trans-[pyCo((DO)(DOH)pn )(L)]PF<sub>6 </sub>and [{py Co((DO)(DOH)pn)}<sub>2 </sub>(</em><em>μ</em><em>-dicyd)] (PF<sub>6</sub>)<sub>2</sub> <sub> </sub> have been studied in acetonitrile solution. All the mono nuclear complexes show two quasi- reversible reduction couples associate to Co(III/II)and Co(II/I). Each of these redox couples split to two one electron waves in dinuclear complex.</em>
Phenycyanamide,Co(III) complex,Comproportionation equilibrium constant,Oxime
https://ijcce.ac.ir/article_8120.html
https://ijcce.ac.ir/article_8120_c7e58f90593bff0e8f7a7df17da9c9ff.pdf
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
24
2
2005
06
01
Synthesis, Characterization, Electrochemical and Spectroelectrochemical Properties of Ruthenium(II) Complexes Containing Phenylcyanamide Ligands and Effect of the Inner- Sphere on the Ru-NCN Chromophore
21
30
EN
Hassan
Hadadzadeh
Chemistry Department, Sistan and Baluchestan University,
P.O. Box 98135-674, Zahedan I. R. IRAN
hadad@cc.iut.ac.ir
Ali Reza
Rezvani
Chemistry Department, Sistan and Baluchestan University,
P.O. Box 98135-674, Zahedan I. R. IRAN
rezvani2001ir@yahoo.ca
10.30492/ijcce.2005.8121
<em>[Ru(terpy)(bpy)(L)]PF<sub>6</sub> complexes, where terpy is 2,2</em><em>΄</em><em>:6′,2″– terpyridine, bpy is 2,2</em><em>΄</em><em> - bipyridine and L is monoanions of 4 - bromophenylcyanamide (4 - Brpcyd), 4-methoxyphenylcyanamide (4 - MeOPcyd), 2, 4 - dibromophenylcyanamide (2,4 - Br<sub>2</sub>pcyd), 2,4-dimethylphenylcyanamide (2,4 - Me<sub>2</sub>pcyd), 2 - methylphenylcyanamide (2 - MePcyd), phenylcyanamide (Pcyd) and naphtylcyanamide (ncyd) have been prepared and characterized by elemental analysis, IR, <sup>1</sup>H-NMR and UV-vis spectroscopies and cyclic voltammetry. Spectroelectrochemistry was used to generate the electronic absorption spectra of the Ru(III) complexes, [Ru(terpy)(bpy)(L)]<sup>2+ </sup> in acetonitrile solution. The spectral data associated with the Ru(III)-cyanamido LMCT chromophore were compared to those derived from Ru(III) analogues in order to gain a greater understanding the effect of spectator ligands on the nature of the Ru(III)-Cyanamide bond.The data supports greater covalency in the Ru(III)-cyanamide bond of [Ru(terpy)(bpy)(L)]<sup>2+</sup> complexes compared to their Ru(III) analogues.</em>
Ruthenium (II) complex,Phenylcyanamide,Oscillator strength,Charge-transfer band
https://ijcce.ac.ir/article_8121.html
https://ijcce.ac.ir/article_8121_6a6ce9cfa20e4d5f9f19a5f3ba8ccf6a.pdf
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
24
2
2005
06
01
The Effect of Micro Silica on Permeability and Chemical Durability of Concrete Used in the Corrosive Environment
31
37
EN
Mohammad Reza
Nilforoushan
Faculty of Engineering, University of Shahrekord,
P.O.Box 115, Shahrekord, I. R. IRAN
10.30492/ijcce.2005.8122
<em>Micro silica (MS) is an extremely fine, spherical powder that is used as an additive for improving concrete performance. It is obtained as a by product of silicon metal and ferrosilicon alloy production. Due to its pozzolanic nature, micro silica can be used to enhance the qualities of both fresh and hardened concrete. </em><em>Addition of micro silica into the concrete as a cement replacement, decreases its permeability. </em><em>As a result, it forms very dense and chemically durable concrete to withstand the harsh and corrosive chemical environments.</em><em>The results of detailed investigations on concrete made from type V cement with addition of </em><em>micro silica as substituent and its curing by tap water shows dramatic increase is compressive strength (CS) of concrete after 7 days of hydration onwards. By repeating experiment in sodium sulfate solutions (50 gr/</em><em>lit) prepared under ASTM C1012 requirements, the results were same as tap water but the extend of increase of compressive strength is lower. It is also confirmed that, micro silica modies pore size distribution and permeability of type V cement concreats in same way as reported for ordinary Portlant cement in various literature. By replacing micro silica as a substituent in type V cement composition, a concreat with high chemical durability and strength are formed, which easily can be used as suitable material for harsh environments such as marine and offshore structures or the places where the concentration of sulfate ions are high, such as concrete sewage pipe line networks.</em>
Micro silica,Concrete made with type V cement,Sulfate resistant concretes,Sewages concrete pipe lines,Chemically durable concretes
https://ijcce.ac.ir/article_8122.html
https://ijcce.ac.ir/article_8122_0c49afe2341a7d4cab9575e510cf2f81.pdf
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
24
2
2005
06
01
Reaction of 1, 1′, 2, 2′-Tetrakis (phenylamino) Ethane with Glyoxal; Synthesis of N2, N3, N7, N8, 1, 4, 5, 6, 9, 10 -Decaphenyltetradecahydro - dipyrazino [2, 3-b: 2, 3-e] Pyrazine-2, 3, 7, 8 -Tetraamine and 5, 6 -bis (ethoxy) -N2, N3, 1, 4 -Tetraphenylhexahydro -2, 3- Pyrazinediamine
39
42
EN
Ali
Kakanejadifard
Department of Chemistry, Faculty of Science, University of Lorestan,
Khoramabad, I. R. IRAN
alikakanejadifard@yahoo.com
Sayed Morteza
Farnia
Department of Chemistry, Faculty of Science, University of Tehran, I. R. IRAN
Issa
Kakoiedinaki
Department of Chemistry, Faculty of Science, University of Tehran, I. R. IRAN
10.30492/ijcce.2005.8123
<em>Compound N<sup>2</sup>, N<sup>3</sup>, N<sup>7</sup>, N<sup>8</sup>, 1, 4, 5, 6, 9, 10-decaphenyltetradecahydrodipyrazino [2, 3-b: 2, 3-e] pyrazine-2, 3, 7, 8-tetraamine (4) was prepared by condensation of 1, 1′, 2, 2′-tetrakis (phenylamino) ethane (1d) and glyoxal in EtOH or i-PrOH. Also, reaction of 1d with glyoxal in equimolare in EtOH resulted 5,6-bis (ethoxy)-N<sup>2</sup>, N<sup>3</sup>, 1, 4-tetraphenylhexahydro-2, 3-pyrazinediamine (5). The natures of products are sensitive to acidity, temperature and solvent. In acidic media, 4 and 5 are unstable and degraded to diimine 6.</em> <em> </em>
Polyazapolycyclic,Hexabenzyl-hexaaza-isowortzitane,Tetraazabicyclo [3, 3, 0] octane,1,1′, 2, 2′-tetrakis (phenylamino) ethane,N2, N3, N7, N8, 1, 4, 5, 6, 9, 10-decaphenyltetradecahydrod- pyrazino [2, 3-b: 2, 3-e] pyrazine-2, 3, 7, 8-tetraamine,5, 6-bis (ethoxy)-N2, N3, 1, 4-tetraphenylhexa- hydro -2, 3-pyrazinediamine
https://ijcce.ac.ir/article_8123.html
https://ijcce.ac.ir/article_8123_126cf4002691b6b2a4bcd6dd1bded6fe.pdf
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
24
2
2005
06
01
Experimental Evaluation of Batch and Continuous Production of Baker’s Yeast under Computer Controlled pH
43
49
EN
Hamid-Reza
Kariminiaae Hamedaani
Department of Chemical and Petroleum Engineering, Sharif University of Technology,
P.O. Box 11365-9465, Tehran, I. R. IRAN
Mohammad
Shahrokhi
Department of Chemical and Petroleum Engineering, Sharif University of Technology,
P.O. Box 11365-9465, Tehran, I. R. IRAN
shahrokhi@sharif.edu
Reza
Roostaazad
Department of Chemical and Petroleum Engineering, Sharif University of Technology,
P.O. Box 11365-9465, Tehran, I. R. IRAN
10.30492/ijcce.2005.8124
<em>Steady state and dynamic fermentations of baker's yeast in molasses based media were analyzed in a laboratory scale bioreactor. Sugar and biomass balances together with the Monod biokinetics were used to develop the process model. Parameters of the model were obtained using collected experimental data. Model predicted open loop responses to step changes in feed concentration as well as dilution rate were compared with experimental data and a good agreement was observed. Despite the nonlinear nature of pH in a biological system, it was controlled successfully using a special on-off strategy implemented on a personal computer. Results proved that productivity of the continuous process was at least twice that of the batch process.</em>
Baker’s yeast,Continuous production,Modeling,pH control
https://ijcce.ac.ir/article_8124.html
https://ijcce.ac.ir/article_8124_d2bbc4d60e7f706cd3b97bab8dac6edd.pdf
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
24
2
2005
06
01
Ion Current Simulation During the Post Flame Period in SI Engines
51
58
EN
Amir Hossein
Shamekhi
Faculty of Mechanical Engineering, K. N. Toosi University of Technology,
P.O.Box 16765-3381, Tehran, I. R. IRAN
Ali
Ghaffari
Faculty of Mechanical Engineering, K. N. Toosi University of Technology,
P.O.Box 16765-3381, Tehran, I. R. IRAN
10.30492/ijcce.2005.8126
<em>The application of ion current signals is one of the most recent approaches in engine management systems. By applying a small constant DC voltage across the electrodes of the spark plug and measuring the current through the electrode gap, the state of gas may be measured and investigated. In this paper a computer code is developed in order to analyze the state of gas during the combustion period. It is shown that there is a strong correlation between the peak pressure and the maximum current position. It is also shown that among all combustion products, the NO has the most contribution in generating electrical current. The two zones model is used for calculating the cylinder pressure and temperature. </em>
Combustion species,Ion current,Modeling,Peak pressure position,SI engines
https://ijcce.ac.ir/article_8126.html
https://ijcce.ac.ir/article_8126_be4b292dc793296faa89c15eed8bed5f.pdf
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
24
2
2005
06
01
Separation of Sedative – Hypnotic Drugs with Mixed Micellar Liquid Chromatography
59
63
EN
Mohammad Reza
Hadjmohammadi
Department of Chemistry, University of Mazandaran , P. O. Box 453, Babolsar, I. R. IRAN
Azadeh
Shariphi Aghili
Department of Chemistry, University of Mazandaran , P. O. Box 453, Babolsar, I. R. IRAN
10.30492/ijcce.2005.8125
<em><em>Separation of ten sedative- hypnotic drugs was performed by RP-HPLC using mixed micellar mobile phase. Effect of temperature, type and amount of organic modifier in mobile phase on efficiency (N) and asymmetry factor (B/A) showed that, the appropriate conditions for a good separation were 35°C and 7% (V/V) butanol in mobile phase. Variations of selectivity factor versus butanol concentration, Mixture of SDS/ Brij- 35 concentrations and pH of mobile phase showed that the appropriate conditions were 7%(V/V), 15 mM SDS +1.0mM Brij-35 and pH=3 in mobile phase respectively.</em> </em>
Sedative-hypnotic drugs,High Performance Liquid Chromatography,Micellar liquid chromatography,Mixed micellar liquid chromatography,Separation of sedative-hypnotic drugs
https://ijcce.ac.ir/article_8125.html
https://ijcce.ac.ir/article_8125_21bad6dc9f08544be2c8bbf6f4693115.pdf