化学技术与冶金大学
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作者:Adeyinka Sikiru Yusuff , Olusola Adedayo Adesina
来源:[J].Journal of Chemical Technology and Metallurgy, 2020, Vol.55 (2)
摘要:In the present study, heterogeneous catalyst was synthesized from type II anthill, characterized and used to catalyze transesterification of palm olein oil with methanol. The influence of reaction parameters, including reaction temperature, reaction time and catalyst dose at fixe...
作者:Yehia H. Magdy , Hossam Altaher , Anwar F. Al Yaqout
来源:[J].Journal of Chemical Technology and Metallurgy, 2020, Vol.55 (2)
摘要:Due to the high cost of activated carbon as an adsorbent, there is a growing interest in a search of alternative sustainable adsorbents. The objective of this study is to investigate the potential use of fuller’s earth (a solid waste from vegetable oils industry) as an adsor...
作者:Nurdaulet Kalassov , Daniela Dzhonova , Irene Tsibranska ...
来源:[J].Journal of Chemical Technology and Metallurgy, 2020, Vol.55 (2)
摘要:Excessive use of fossil fuel results in a rapid depletion of non-renewable fossil energy resources, a rise in fuel cost and an uncontrolled emission of greenhouse gases, which causes a severe threat to the environment. This critical state has turned the awareness to explore renew...
作者:Tina Tasheva , Vesselin Dimitrov
来源:[J].Journal of Chemical Technology and Metallurgy, 2020, Vol.55 (2)
摘要:Glasses with compositions xTeO2 - (35-x) BaO - 65V2O5 (where x = 5, 10, 15, 20, 25 and 30 mol %) were prepared using a conventional melt quenching method. Densities of the glasses at room temperature were determined with the Archimedes method. The theoretical linear refracti...
作者:Soheil Faraji , Fatemeh Bahadori
来源:[J].Journal of Chemical Technology and Metallurgy, 2020, Vol.55 (2)
摘要:One of the challenges of the combustion process refers to the production of carbon monoxide and its sedimentation on coils and furnace walls. This phenomenon decreases the heat transfer efficiency of the furnace. In this paper, an industrial furnace faced with incomplete combusti...
作者:Maya Chochkova , Boyka Stoykova , Lubomira Nikolaeva-Glomb ...
来源:[J].Journal of Chemical Technology and Metallurgy, 2020, Vol.55 (2)
摘要:A series of amides was synthesized by coupling of 3-aminomethylglaucine with various amino acid analogues. The reaction was carried out under mild conditions by using various carbodiimides and in the presence of catalytic amount of N-hydroxybenzotriazole. Five of the compoun...
作者:Аlbena Yoleva , Stoyan Djambazov , Sibel Sabrieva ...
来源:[J].Journal of Chemical Technology and Metallurgy, 2020, Vol.55 (2)
摘要:The production of low cost ceramic membranes has been studied by many researchers using a variety of natural raw materials such as clays, kaolins, limestones, dolomites, zeolites, diatomites and various kinds of wastes such as fly ash, sawdust, sewage sludge, bagasse, waste ...
作者:Nevena Lazarova-Zdravkova , Dimitar Peshev , Nelly Georgieva
来源:[J].Journal of Chemical Technology and Metallurgy, 2020, Vol.55 (2)
摘要:Long-term stability of microencapsulated via spouted-bed rosemary hydro-alcoholic extracts was studied regarding their antibacterial activity. The samples were stored in dark place at 4°C for 10 months. Five batches with variation in the incorporated extracts and composition...
作者:Mohammad Salim Kaiser , Sakib Hasan Sabbir , Mashiur Rahman Soummo ...
来源:[J].Journal of Chemical Technology and Metallurgy, 2020, Vol.55 (2)
摘要:The age hardening effect in Fe, Ni and Cr added hyper-eutectic Al-Si automotive alloy has been studied to isochronal and isothermal ageing at various temperatures for different times. It is observed that double aging peaks takes place in the aged alloys due to the formation ...
作者:Sylvia Aulia Rahmah , Nadya Aisya , Lailatul Fithri ...
来源:[J].Journal of Chemical Technology and Metallurgy, 2020, Vol.55 (2)
摘要:Deinking is the process of removing and separating ink from printed paper fiber. Large quantities of chemicals are used in the traditional deinking process in the paper industry. This is not only expensive, but the use of chemicals in large quantities also leads to many envi...

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