National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRTEgyptian Journal of Chemistry0449-228555520121030Biodiesel Production from Waste Cooking Oil437452116710.21608/ejchem.2012.1167ENJournal Article20120718
<span style="font-size: xx-small;">THE INCREASING awareness of the depletion of fossil fuel ……resources and the environmental benefits of biodiesel fuel has made it more attractive in recent times. The cost of biodiesel, however, is the major hurdle to its commercialization in comparison to petroleum-based diesel fuel. The high cost is primarily due to the raw material, mostly neat vegetable oil. Used cooking oil is one of the economical sources for biodiesel production. However, the products formed during frying, can affect the transesterification reaction and the biodiesel properties. This review attempts to review various technological methods of biodiesel production from used cooking oil. The analytical methods for high quality biodiesel fuel from used cooking oil like GC, HPLC and TGA have also been used. In addition, the specifications provided by different countries are presented. The fuel properties of biodiesel fuel from used cooking oil were also reviewed and compared with those of conventional diesel fuel. </span>https://ejchem.journals.ekb.eg/article_1167_e2783eab53f4143b36aaa1a498229999.pdfNational Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRTEgyptian Journal of Chemistry0449-228555520121030Catalysis and Nanotechnologies453473116810.21608/ejchem.2012.1168ENJournal Article20120718
<span style="font-size: xx-small;">NANOTECHNOLOGY can be understood as a technology of …….design, fabrication and applications of nanostructures and nanomaterials, as well as fundamental understanding of physical properties and phenomena of nanomaterials and nanostructures. Nanomaterials, compared to bulk materials, have the scales ranging from individual atoms or molecules to submicron dimensions at least in one dimension. Nanomaterials and nanotechnology have found the significant applications in physical, chemical and biological systems. The discovery of novel materials, processes, and phenomena at the nanoscale, as well as the development of new experimental and theoretical techniques for research provide plenty of new opportunities for the development of innovative nanostructured materials. Nanostructured materials can be made with unique nanostructures and properties. This field is expected to open new venues in science and technology. </span>https://ejchem.journals.ekb.eg/article_1168_e4c906e9582ff500d43b557db0d43d58.pdfNational Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRTEgyptian Journal of Chemistry0449-228555520121030Synthesis and Application of Functional (Anti-UV) Azo - dyes on Nylon Fabrics: Part I475489116910.21608/ejchem.2012.1169ENJournal Article20120911
<span style="font-size: xx-small;">NINE novel azo dyes containing UV absorber (anti-UV dyes) ……were synthesized by diazotization of primary aromatic amines (p.NO</span><span style="font-size: xx-small;">2</span><span style="font-size: xx-small;">, p.Cl, p.Br aniline) and then coupling with J- acid coupler. The resultant intermediates were also diazotized and coupled with anti-UV functional finishing groups (resorcinol, 2, 4- dihydroxy benzophenone, 1- hydroxy benzotriazol sulfonic acid UV absorbers). The structure of the synthesized dyes was fully elucidated using FTIR and </span><span style="font-size: xx-small;">1</span><span style="font-size: xx-small;">H-NMR. All synthesized dyes were applied on nylon fabrics. Fabrics dyed with anti-UV dyes were tested for color strength (K/S), rate of fading (ΔE) values and fastness properties. </span>https://ejchem.journals.ekb.eg/article_1169_2bb72f39f54f5d74e1a47f0a317ffed7.pdfNational Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRTEgyptian Journal of Chemistry0449-228555520121030Preparation and Characterization of Keratin-Polyvinyl Alcohol Composite Film491507117010.21608/ejchem.2012.1170ENJournal Article20120918
<span style="font-size: xx-small;">AN ECONOMICALLY feasible method for preparation of ……..keratin/ polyvinyl alcohol composite was proposed. Keratinous materials; namely wool waste, feathers, camel hair, and human hair were dissolved in selected reagents. Dissolution of the said keratinous materials was carried out using alkali metal hydroxide or alkaline earth metal hydroxide in presence of swelling agent and reducing agent. A keratin-polyvinyl alcohol composite film was prepared by casting both materials in aqueous solution. Polyvinyl alcohol acts as a carrier for the keratinous material. The range of viscosity of the obtained keratin-polyvinyl alcohol composite, which is suitable to be spread into films, was assessed. The effect of crosslinking of keratin-polyvinyl alcohol film on its mechanical properties as well as hygroscopic properties was monitored. Liquid chromatography mass spectrometric analysis elucidated that the molecular mass of the obtained soluble keratin is not less than 2 Dalton. The elemental analysis of the said composite divulges that only limited change in the carbon, hydrogen, sulphur and nitrogen contents was recorded, compared with the native keratinous substrates. </span>https://ejchem.journals.ekb.eg/article_1170_c91896e5fd6976616ffb9d6dd6f669fc.pdfNational Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRTEgyptian Journal of Chemistry0449-228555520121030Sulfated Zirconia Catalysts for Low Temperature Isomerization of n-Pentane509527117110.21608/ejchem.2012.1171ENJournal Article20121001
<span style="font-size: xx-small;">UNCONVENTIONAL sulphated zirconia (SZ) catalysts were .….. prepared and examined for n-pentane isomerisation in this investigation. The sulfation was performed using H</span><span style="font-size: xx-small;">2</span><span style="font-size: xx-small;">SO</span><span style="font-size: xx-small;">4 </span><span style="font-size: xx-small;">acid. The calcination step seems to attain the highest influence using our sol-gel preparations, where the crystallinity transforms to the denser form. However, the surface properties do not exhibit such effectiveness. Calcination at 500°C gives the best activities and stabilities, whereas at 650°C, calcination is deteriorative. IR spectra, TPR, TGA, DSC, XRD and surface properties of the current catalysts were investigated. </span>https://ejchem.journals.ekb.eg/article_1171_41aab82bfda60e55ffdbf346971fd09d.pdfNational Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRTEgyptian Journal of Chemistry0449-228555520121030Synthesis, Structural Characterization of Some Pyrazolo [3,4-d] pyrimidine Derivatives as Anti-inflammatory Agents529457117210.21608/ejchem.2012.1172ENJournal Article20121104
<span style="font-size: xx-small;">ASERIES of pyrimidine and fused triazolopyrimidine derivatives were newly synthesized using aminopyrazole carbonitrile 1 as a had starting material and compounds 14 and 16 are intermediates. Initially, the acute toxicity of the compounds was assayed </span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">via </span></span></em><span style="font-size: xx-small;">the determination of their LD</span><span style="font-size: xx-small;">50</span><span style="font-size: xx-small;">, and all compounds were interestingly less toxic and had lower ulcerogenic activities than Diclophenac</span><span style="font-size: xx-small;">® </span><span style="font-size: xx-small;">as a reference drug. Regarding the protection against Carrageenan induced edema; the pharmacological screening showed that compounds 17, 11, 13 and 5 have good anti-inflammatory activities comparable to the reference drug. On the other hand, in searching for COX-2 inhibitor, the inhibition of plasma prostaglandine (PGE</span><span style="font-size: xx-small;">2</span><span style="font-size: xx-small;">) for the compounds was determined and the same four compounds were found the more potent agents. The detailed synthesis, spectroscopic data, pharmacological screening and acute toxicity LD</span><span style="font-size: xx-small;">50 </span><span style="font-size: xx-small;">for the synthesized compounds were reported. </span>https://ejchem.journals.ekb.eg/article_1172_9684401fbd7ae35337d8eedfc84e9a06.pdfNational Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRTEgyptian Journal of Chemistry0449-228555520121030New Approaches for the Synthesis of Thiophene Derivatives with Antitumor Activities549560117310.21608/ejchem.2012.1173ENJournal Article20121213
<span style="font-size: xx-small;">TETRAHYDROBENZO[B]THIOPHENE derivatives 3a,b and 5a,b were synthesized followed by the alkylation of some derivatives. The antitumor evaluation of the newly synthesized products against three cancer cell lines, namely breast adenocarcinoma (MCF-7), non-small cell lung cancer (NCI-H460) and CNS cancer (SF-268) was recorded. Some of the synthesized compounds show high inhibitory effects. </span>https://ejchem.journals.ekb.eg/article_1173_354129af93a4951828270c31a0c31630.pdf