Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998610119910601A Study of Na/K Feldspar Solid Solution Using Statistical Mechanics4151093510.30492/ijcce.1991.10935ENGholam Abbas ParsafarIsfahan University of Technology, Isfahan, I.R. IRANY. GhayebIsfahan University of Technology, Isfahan, I.R. IRANJournal Article19880613<em>Thermal behavior of various solid feldspars are different, namely those of bivalent cations show no change in the distribution of Al and Si atoms, whereas feldspars of univalent cations become more disordered with raising temperature. In the latter case Al atoms migrate from the sites they occupe at low temperatures and interchange positions with the Si atoms. At high temperatures (but still below the melting point) the mixture of the two feldspars forms a solid solution, while at low temperatures two almost pure phases separate out from each other. The behavior of pure feldspar (like albite) have been theoretically studied by various methods, while solid solutions of feldspars of univalent cations have not been studied (due to their complexity). In this paper statistical mechanical methods are used to study sodium and potassium feldspar solutions.</em>https://ijcce.ac.ir/article_10935_aa443fa2129ea69ad49269ed4293dd37.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998610119910601Fischer-Tropsch Synthesis of Hydrocarbons Using Iron-Mordenite Catalysts16161093610.30492/ijcce.1991.10936ENM.M AkbarnejadResearch Institute of Petroleum Industry, N.I.O.C., Tehran, I.R. IRANM. OskooieDepartment of Physics, Sharif University of Technology, Tehran, I.R. IRANM. GharanfoliDepartment of Chemistry, Sharif University of Technology, Tehran, I.R. IRANJournal Article19890809<em>Fischer-tropsch catalysts with high activity and selectivity for olefins were produced using mordenite type SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub>= 12, 20, 28, 62 zeolite supported iron carbonyl compounds and were characterized by X-ray powder diffraction. The adsorptionof volatile Fe(CO)<sub>5</sub> on the support surface was carried out under vacuum at room temperature. Reduction les were monitored by vibrating sample magnetometer (VSM). The magnetic saturation time was observed to increase with increasing the Al<sub>2</sub>O<sub>3</sub> content of catalyst system indicating an increasing interaction between iron and alumina. The activity and selectivity of different iron deposited mordenite sample were investigated during Fischer-Tropsch synthesis of hydrocarbons with H<sub>2</sub>/CO=3 in the temperature range of 400-500 °C using a microreactor system. The results correlated with the acidic properties of surface and/or with metallic state of active iron particles of the catalyst.</em>https://ijcce.ac.ir/article_10936_744619d9c604bfbda8fff24b91558333.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998610119910601In Plane Vibration of Pyrimidine and some Deuterated Pyrimidines17231093810.30492/ijcce.1991.10938ENF. Milani Nejad,Department of chemistry, Ferdowsi University, Mashhad, I.R. IRANJournal Article19890815<em>On the basis of 102 assigned frequencies to in plane vibrations of pyrimidine, pyrimidine-2-d<sub>2</sub>, pyrimidine-2, 5-d<sub>2</sub>, pyrimidine-4,6-d<sub>2</sub>, pyrimidine-2,4,6-d<sub>3</sub> and pyrimidine-d<sub>4</sub>, 35 valance force field constants including 14 principals and 21 interaction force constants are calculated. New assignments are suggested for </em><em>n</em><em><sub>18b</sub></em><em> and </em><em>n</em><em><sub>19b</sub></em><em> normal modes in pyrimidine-2,5-d<sub>2</sub> and </em><em>n</em><em><sub>14</sub></em><em> and </em><em>n</em><em><sub>18b</sub></em><em> normal modes in pyrimidine-d<sub>4</sub>. With this new assignments the agreement between observed and calculated product rule and sum rule has improved.</em>https://ijcce.ac.ir/article_10938_d511743c89dd393647b66084ba79c359.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998610119910601Chemiluminescence Properties of Peroxyoxalate System in Organic Solvents24341093910.30492/ijcce.1991.10939ENM.R. HadjmohammadiInstitute of Chemistry, University of Mazandaran, Babolsar, I.R. IRANA. Samadi MeibodiInstitute of Chemistry, University of Mazandaran, Babolsar, I.R. IRANJournal Article19890816<em>Peroxyoxalate system includes an oxalate ester, peroxide and a fluorescer, The energy resulted from the reaction of oxalate ester and peroxide is transferred to fluorescer and cause it to fluorsc. The effect of reactants chemical structure, their concentration, solvent media (polarity and viscosity) and the temperature, on the intensity of the illuminated light with respect to time have been studied. The effect of chemical structure of oxalate ester, fluorescer and peroxide on the intensith of light was found to be follows:</em> <em>DNPO < TCPO < CBPO</em> <em>BPEN < A < DPA < BPEA</em> <em>Tert-Butylhydroperoxide < Hydrogen Peroxid</em>https://ijcce.ac.ir/article_10939_085bad8b56e570d2edb4c84241260acb.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998610119910601Second Virial Coefficients for Nonspherical Molecules and Their Experimental Measurements35391094010.30492/ijcce.1991.10940ENA. BoushehriDepartment of Chemistry, Shiraz University, Shiraz, I.R. IRANS.H. MoosavipourDepartment of Chemistry, Shiraz University, Shiraz, I.R. IRANJournal Article19991028<em>The virial coefficients can be obtained from statistical mechanics in connection with the intermolecular potentials. The intermolecular potential of polyatomic molecules is usually assumed to consist of a spherically symmetric component plus a contribution due to asphericaity of the molecular charge distribution. In this study, the second virial coefficients have been calculated for N<sub>2</sub>, CO and SF<sub>6</sub> from the Lennard-Jones (6-12) potential. The results are in good agreement with those obtained experimentally.</em>https://ijcce.ac.ir/article_10940_c76a02f07ae0f205758a9f61bf1524cd.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998610119910601NMR Study of Benzo-15-Crown-5 Complexes with 7Li+ and 133Cs+ Ions in Nonaqueous solvents40451094110.30492/ijcce.1991.10941ENMojtaba ShamsipurDepartment of Chemistry, Shiraz University, Shiraz, I.R. IRANM.K. AminiDepartment of Chemistry, Shiraz University, Shiraz, I.R. IRANJournal Article19891129<em>Complexes of benzo-15-crown-5 macrocycle with Li<sup>+</sup> and Cs<sup>+</sup> ions were investigated by <sup>7</sup>Li and <sup>133</sup>Cs NMr in a number of nonoqueous solutions. The resulting 1:1 complex with Li<sup>+</sup> ion was found to be much more stable than that with Cs<sup>+</sup> ion. With the exception of pyridine solutions the stabilities of the complexes varied inversely with the Gutmann donor number of the solvents. Some indirect evidence for the formation of very weak 2:1 complexes was observed.</em> https://ijcce.ac.ir/article_10941_447e6e67088a614756c584a6619d136f.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998610119910601Thermal Diffusion Factor in Gas Mixture-Dufour Effect (I)46501094210.30492/ijcce.1991.10942ENA. BoushehriDepartment of Chemistry, University of Shiraz, Shiraz, I.R. IRANAli MaghariDepartment of Chemistry, University of Tehran, Tehran, I.R. IRANJournal Article20141227<em>The thermal diffusion factor, </em><em>a</em><em><sub>T</sub></em><em>, for a binary gas mixture is calculated on the basis of nonequilibrium thermodynamics. A new formula for </em><em>a</em><em><sub>T</sub></em><em> is derived and this factor is given for several paris of gases according to this formula.</em>https://ijcce.ac.ir/article_10942_f75854eca899ecd70a65d1966d3787dd.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998610119910601Acid Catalysed Condesation of Phloroglucinol and Acetone-Kinetics and Mechanism51581094910.30492/ijcce.1991.10949ENH.C. MalhotraDepartment of Chemistry, University of Delhi, Delhi-110007, INDIAA. AminifarDepartment of Chemistry, University of Delhi, Delhi-110007, INDIAJournal Article19891206<em>The kinetic study of the condensation reaction between phloroglucinol and acetone was investigated at 30, 35, 40 and 45</em><em>±</em><em>0.05 °C in 100% methanol. The hydrochloric acid concentrations used were 0.0261, 0.0364, 0.0577 and 0.0728 M. The reaction was investigated with and without a promoter, thioglycollic acid (TGA), and taking into account the functionality (</em><em>h</em><em>) of phloroglucionol. The reaction was found to obey a second order rate law, the rate increasing with an increase in acid catalyst concentration. The activation parameters for the overall reactions have been calculated. The raction was also carried out in solvents 1,4-di-oxane, isopropanol, ethanol and methanol. The overall rate constants were resolved into step rate constants. A mechanism consistent with the kinetic data has been suggested.</em>https://ijcce.ac.ir/article_10949_1b0583020363f7a80494b6b739e61ca9.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998610119910601The Unexpected Effect of Sodium Arsenate on the Interaction between Histone H1 and Sodium N-Dodecyl Sulphate59651095010.30492/ijcce.1991.10950ENA.A. Moosavi MovahediInstitute of Biochemistry & Biophysics University of Tehran, P.O. Box 13145-1384 Tehran, I.R. IRANM.R. HousaindokhtInstitute of Biochemistry & Biophysics University of Tehran, P.O. Box 13145-1384 Tehran, I.R. IRANJournal Article19900416<em>A Study was made on the interaction between histon H<sub>1</sub> and sodium n-dodecyl sulphate (SDS) in the presence of sodium arsenate inside a phosphate buffer of pH 6.4, using spectroscopy and equilibrium dialysis at 27 °C. The binding data has been used to obtain the gibbs free energy in terms of a theoretical model based on the Wyman binding potential. The binding data hs been analysed in terms of Hill equation, to obtain Hill coefficient. The data show that sodium arsenate exhibits an unusually greater degree of denaturation for the structure of H<sub>1</sub>.</em>https://ijcce.ac.ir/article_10950_ce14e9a4bd9294647be0a01af4bb7945.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998610119910601Synthesis and Trapping of 3,4,3',4'-Tetradehydrobiphenyl (Bisbenzyne)66781095110.30492/ijcce.1991.10951ENJ.R. WilliamsonDepartment of Chemistry, Eastern Michigan University, Ypsilanti, Michigan, 48197, U.S.AShadpour MallakpourCollege of Chemistry, Isfahan University of Technology, Isfahan, I.R. IRANJournal Article19900611<em>3,3'-Dicarboxy-4,4'-diaminobiphenyl was synthesized from Onitrobenzoic acid following standard procedures. Diazotization of this compound with isoamylnitrite, under approtic condition gave diphenyl-4,4'-bis-diazonium-3,3'-dicarboxylate and subsequent thermal decomposition of this diazonium compound produced 3,4,3',4'-tetradehydrobiphenyl (bisbenzyne) as a reactive intermediate. Bisbenzyne was trapped with the diene 2,3,4,5-tetraphenylcyclopentadienone via a [4+2]diels-Alder cycloaddition reaction yielding the previously unreported 5,6,7,8,5',6',7',8'-octaphenyl-2,2'-binaphthyl. This novel compound was fully characterized by elemental analysis IR and <sup>1</sup>HNMR spectroscopy.</em>https://ijcce.ac.ir/article_10951_aa1a11368d2f7a52b8198f80a47867fa.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998610119910601Extraction of Carthamin from Carthamus Tinctorus and Investigating Its Dyeing of Wool Using Potassium DI-Chromate Mordant79861095210.30492/ijcce.1991.10952ENN. SaadatjouDepartment of Applied Chemistry, Faculty of Chemistry, Tabriz University, Tabriz, I.R. IRANJournal Article19880104<em>Carthamin, the natural dye of carthamus tinctorius (Golrang) was separated by soxhlet extraction and further purified in good yields. Its mordant dyeing of wool, using potassium dichromate as mordant, showed a high washing fastness (above 4). Mordanting by "sweet chrome", "sour chrome", and "reduced chrome" proved that last one to be superior.</em>https://ijcce.ac.ir/article_10952_57a8b5c25687cbac21842f4f56e5e605.pdf