scholarly journals THE STUDY OF THE FUNCTIONAL FEATURES OF THE SYNTHESIZED ALUMINUM-NICKEL-MOLYBDENUM HYDROTREATING CATALYSTS

2020 ◽  
pp. 275-279
Author(s):  
Ozoda Abdullaevna Salikhova ◽  
Shakhzod Murodovich Makhmudov ◽  
Miraziz Solikh ogli Zokirov
Keyword(s):  
Solid Phase ◽  
Raw Materials ◽  
Catalyst Activity ◽  
Chemical Properties ◽  
Oil Refining ◽  
Mineral Oils ◽  
Mo Catalyst ◽  
Highly Active ◽  
Functional Features ◽  
Activation Conditions

The process of hydro-desulfurization of various mineral oils, which play a big role in the modern oil refining technology, continues to improve intensively and its value increases. Despite the fact that nowadays, hydro treating is one of the largest catalytic processes in the modern oil refining industry, the power of hydro desulfurization in the world is estimated as 950 million tons a year. So, it can be concluded that the study of hydro treating catalysts, the chemistry of hydro-desulfurization processes are the high priority tasks leading to the technological solving of the problem of hydro treating process. Moreover, it is also necessary to study other major issues related to the hydro treating process: study of the interaction between active metals and carriers; reactions in the solid phase as swell as issues of oxide reduction or their conversion to sulfides. The determination of the surface state in equilibrium conditions, the amount of the coke deposits, the stoichiometry of the catalysts, its changes during activation and regeneration during catalytic process. This article outlines the development of the production of highly active aluminum-nickel-molybdenum catalysts for hydro treating distillate raw materials, improving its physical and chemical properties and activity by modification of the carrier and by studying of the influence of activation conditions. KEYWORDS: hydrogenation activity, sulfurization of Al-Ni-Mo catalyst, activity of the catalyst, thiophene hydrogenolysis.

scholarly journals Forecasting the quality of mineral oils during oil refining according to the fuel and oil flow chart at Atyrau Refinery

2021 ◽  
Vol 288 ◽  
pp. 01028
Author(s):  
Aigul Bukanova ◽  
Fazilat Kayrliyeva ◽  
Saule Bukanova ◽  
Nagima Karabassova ◽  
Lydia Sakipova
Keyword(s):  
Viscosity Index ◽  
Experimental Studies ◽  
Chemical Properties ◽  
Vacuum Gasoil ◽  
Oil Refining ◽  
Mineral Oils ◽  
Type Composition ◽  
Oil Flow ◽  
The Republic

The article discusses the problem of rational oil refining at Atyrau Refinery. Based on a detailed study of the properties of low-sulfur oils of Kazakhstan, in order to assess the potential for the selection of petroleum oils, effective refining methods with modern technologies are shown. A graph is given that allows us to assess the raw mate-rial potential of the Republic of Kazakhstan for lube fractions of oil. The potential reserve of the considered deposits can fully meet the needs of the Republic in oils. The physical and chemical properties of crude oil sup-plied to Atyrau refinery, with a view to their use as raw materi-als for the oil refining and production. The results of experiments on hydrocracking of the plant’s vacuum gasoil are also presented, indicating that this refining option allows you to obtain not only light distillates (gasoline and diesel fuel), but also excellent base oils. This can significantly advance the oil refining in the enterprise as a whole. On the basis of experimental studies, the correlation dependence of the viscosity index on the hydrocarbon-type composition of oils was revealed, which allows predicting the quality of the resulting product.

scholarly journals Investigation of the parameters of the process of obtaining low-sulfur coke from heavy oil residues in the presence of a recycling agent

2021 ◽  
Vol 340 ◽  
pp. 01005
Author(s):  
Nurdaulet Buzayev ◽  
Yermek Aubakirov ◽  
Firuza Akhmetova ◽  
Manshuk Ibrayeva ◽  
Shynar Sanyazova ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Raw Materials ◽  
Chemical Properties ◽  
Hydrocarbon Composition ◽  
Oil Field ◽  
Oil Refining ◽  
Heavy Oil Residues ◽  
Recycling Agent ◽  
Destructive Processes ◽  
Low Sulfur

The current state of the oil refining industry is characterized by obtaining high-quality products that meet environmental requirements. An important issue is the deep processing of oil, as well as the use of oil waste as raw materials. In this regard, there is an interest in putting oil raw materials into operation through destructive processes: catalytic cracking, thermal cracking, visbreaking, coking, and processing of most of the oil waste. The article shows the possibility of producing coke with a low sulfur content from heavy oil waste from a domestic oil field. The physical and chemical properties of the extracted distillates are determined by chromatographic analysis and determined that the group-hydrocarbon composition corresponds to the composition of fractions obtained from primary atmospheric distillation. The process of obtaining of low-sulfur coke used as a conductor and oxidizer of electric current and raw materials in the production of structural material in the presence of a recycling agent from heavy oil waste from the Kumkol field was studied.

scholarly journals On methods of modifying natural minerals

2021 ◽  
Author(s):  
B. Kenzhaliyev ◽  
◽  
T. Surkova ◽  
A. Berkinbayeva ◽  
Z. Dossymbayeva ◽  
...  
Keyword(s):  
Solid Phase ◽  
Raw Materials ◽  
Chemical Properties ◽  
Limiting Factor ◽  
Chemical Methods ◽  
Natural Sorbents ◽  
The Republic ◽  
Technogenic Raw Materials ◽  
Phosphorus Production ◽  
Physical And Chemical

Recently, more and more attention is paid to the ecological safety of the republic due to the increased threat of environmental pollution by radionuclides, particularly by uranium, while the processing of uranium-containing raw materials generates a significant amount of liquid industrial waste. The main waste disposal method is a sorption, which requires the use of inexpensive sorbents. Such sorbents can be obtained on the basis of domestic natural raw materials. The significant disadvantages of natural sorbents are a low sorption capacity, which can be increased by developing effective and relatively cheap methods for their modification. The absence of the methods of modification is a limiting factor for the widespread using of natural sorbents for environmental purposes. Variants of modification of natural aluminosilicate and coal-mineral raw materials of Kazakhstan by physical and chemical methods are considered. The chemical methods include the modification with a mixture of tributylphostat and di-2-ethylhexylphosphoric acid in kerosene to obtain "solid-phase extractants", a mixture of phosphoric acid and polyacrylamide, and the synthesis of organominerals. The possibility of using technogenic raw materials as a modifying reagent has been studied. Zeolite of the previously unexplored Kosmurun deposit and shungite of the Koksu deposit were selected for research, and slags of phosphorus production were selected as a technogenic raw materials. Their physical and chemical properties have been studied.

Diesel Biofuels - Preparation, Characterization and Testing

2008 ◽  
Vol 59 (11) ◽  
Author(s):  
Cristina Dusescu ◽  
Anca Borcea ◽  
Vasile Matei ◽  
Ion Popa ◽  
Irina Gabriela Radulescu
Keyword(s):  
Vegetable Oils ◽  
Sunflower Oil ◽  
Raw Materials ◽  
Chemical Properties ◽  
Soya Bean ◽  
Production Unit ◽  
Physical And Chemical Properties ◽  
Physical And Chemical ◽  
And Chemical Properties

The present paper studies biodiesel samples preparation by transesterification and compares their physical and chemical properties (biofuels prepared from different raw materials - vegetable oils: sunflower oil, crocus oil and soya bean oil) and the biodegradability degree, as well as the possibilities of the integration of such production unit in industrial diagram of auto fuels production.

Anthocyanins: Chemical Properties and Health Benefits: A Review

2021 ◽  
Vol 17 ◽  
Author(s):  
Siraj Salman Mohammad ◽  
Renata Oliveira Santos ◽  
Maria Ivone Barbosa ◽  
José Lucena Barbosa Junior
Keyword(s):  
Raw Materials ◽  
Health Benefits ◽  
Chemical Properties ◽  
Extraction Methods ◽  
The Body ◽  
Raw Material ◽  
Extraction Properties ◽  
Therapeutic Properties ◽  
Food Processes ◽  
Shed Light

: Anthocyanins are widely spread in different kinds of food, especially fruits and floral tissues, there is an extensive range of anthocyanin compounds reach more than 600 exist in nature. Anthocyanins can be used as antioxidants and raw material for several applications in food and pharmaceutical industry. Consequently, a plenty of studies about anthocyanins sources and extraction methods were reported. Furthermore, many studies about their stability, bioactive and therapeutic properties have been done. According to the body of work, we firstly worked to shed light on anthocyanin properties including chemical, antioxidant and extraction properties. Secondly, we reported the applications and health benefits of anthocyanin including the applications in food processes and anthocyanin characteristics as therapeutic and prophylactic compounds. We reviewed anticancer, anti-diabetic, anti-fatness, oxidative Stress and lipid decreasing and vasoprotective effects of anthocyanins. In conclusion, because the importance of phytochemicals and bioactive compounds the research is still continuing to find new anthocyanins from natural sources and invest them as raw materials in the pharmaceutical and nutrition applications.

Improved Conditions for Solid Phase Synthesis of Oligonucleotides on PS-PEG Copolymers

1995 ◽  
Vol 50 (7) ◽  
pp. 1096-1100 ◽  
Author(s):  
Ernst Bayer ◽  
Konrad Bleicher ◽  
Martin Maier
Keyword(s):  
Electrospray Mass Spectrometry ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Chemical Properties ◽  
Oligonucleotide Synthesis ◽  
Phase Synthesis ◽  
Controlled Pore Glass ◽  
Product Identification ◽  
Pore Glass ◽  
And Chemical Properties

Polystyrene-polyethylene glycol (PS-PEG) tentacle polymers with loadings of up to 60/<μmol/g were used for standard oligonucleotide synthesis. As these resins are easy to handle and stable under reaction and cleavage conditions they may be used alternatively to controlled pore glass (CPG) as the most commonly used solid support for oligonucleotide synthesis. However, structural and chemical properties of the PS-PEG resins require modified conditions to guarantee syntheses with high coupling efficiencies. Oligonucleotides (ODN ) of various sequences and lengths have successfully been synthesized using HPLC and capillary electrophoresis (CE) for purity control. Additionally, electrospray mass spectrometry (ES-MS) was used for product identification.

scholarly journals Fe3O4@C Nanoparticles Synthesized by In Situ Solid-Phase Method for Removal of Methylene Blue

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 330
Author(s):  
Hengli Xiang ◽  
Genkuan Ren ◽  
Yanjun Zhong ◽  
Dehua Xu ◽  
Zhiye Zhang ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Solid Phase ◽  
Raw Materials ◽  
Phase Method ◽  
Maximum Adsorption Capacity ◽  
High Catalytic Activity ◽  
Solid Phase Reaction ◽  
Phase Reaction ◽  
High Concentrations

Fe3O4@C nanoparticles were prepared by an in situ, solid-phase reaction, without any precursor, using FeSO4, FeS2, and PVP K30 as raw materials. The nanoparticles were utilized to decolorize high concentrations methylene blue (MB). The results indicated that the maximum adsorption capacity of the Fe3O4@C nanoparticles was 18.52 mg/g, and that the adsorption process was exothermic. Additionally, by employing H2O2 as the initiator of a Fenton-like reaction, the removal efficiency of 100 mg/L MB reached ~99% with Fe3O4@C nanoparticles, while that of MB was only ~34% using pure Fe3O4 nanoparticles. The mechanism of H2O2 activated on the Fe3O4@C nanoparticles and the possible degradation pathways of MB are discussed. The Fe3O4@C nanoparticles retained high catalytic activity after five usage cycles. This work describes a facile method for producing Fe3O4@C nanoparticles with excellent catalytic reactivity, and therefore, represents a promising approach for the industrial production of Fe3O4@C nanoparticles for the treatment of high concentrations of dyes in wastewater.

scholarly journals Eco-Compatible Construction Materials Containing Ceramic Sludge and Packaging Glass Cullet

2021 ◽  
Vol 11 (8) ◽  
pp. 3545
Author(s):  
Fernanda Andreola ◽  
Isabella Lancellotti ◽  
Paolo Pozzi ◽  
Luisa Barbieri
Keyword(s):  
Raw Materials ◽  
Construction Materials ◽  
Treatment Plant ◽  
Glass Ceramics ◽  
Chemical Properties ◽  
Linear Shrinkage ◽  
Glass Cullet ◽  
Commercial Glass ◽  
Packaging Glass ◽  
And Chemical Properties

This research reports results of eco-compatible building material obtained without natural raw materials. A mixture of sludge from a ceramic wastewater treatment plant and glass cullet from the urban collection was used to obtain high sintered products suitable to be used as covering floor/wall tiles in buildings. The fired samples were tested by water absorption, linear shrinkage, apparent density, and mechanical and chemical properties. Satisfactory results were achieved from densification properties and SEM/XRD analyses showed a compact polycrystalline microstructure with albite and wollastonite embedded in the glassy phase, similar to other commercial glass-ceramics. Besides, the products were obtained with a reduction of 200 °C with respect to the firing temperatures of commercial ones. Additionally, the realized materials were undergone to leaching test following Italian regulation to evaluate the mobility of hazardous ions present into the sludge. The data obtained verified that after thermal treatment the heavy metals were immobilized into the ceramic matrix without further environmental impact for the product use. The results of the research confirm that this valorization of matter using only residues produces glass ceramics high sintered suitable to be used as tile with technological properties similar or higher than commercial ones.

Comparative Study of Different Activation Treatments for the Preparation of Activated Carbon: A Mini-Review

2017 ◽  
Vol 100 (3) ◽  
pp. 299-312 ◽  
Author(s):  
Muhammad Imran Din ◽  
Sania Ashraf ◽  
Azeem Intisar
Keyword(s):  
Activated Carbon ◽  
Comparative Study ◽  
Raw Materials ◽  
Chemical Activation ◽  
Comparative Approach ◽  
Adsorption Mechanisms ◽  
Temperature Activation ◽  
Activation Conditions ◽  
Physical And Chemical ◽  
Characterisation Techniques

In this review, various methods of preparation of activated carbon from agricultural and commercial waste material are reviewed. In addition, we also discuss various activation treatments using a comparative approach. The data are organised in tabulated form for ease of comparative study. A review of numerous characterisation techniques is also provided. The effect of time and temperature, activation conditions, carbonisation conditions and impregnation ratios are explained and several physical and chemical activation treatments of raw materials and their impact on the micro- and mesoporous volumes and surface area are discussed. Lastly, a review of adsorption mechanisms of activated carbon (AC) is also provided.

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