Effect of cyclodextrin attendance on hexagonal ordering of MCM-41 silicas

Hydrothermal sol-gel synthesis of hexagonally ordered silicas using a hybrid template system is reported. Silicas were characterized by IR spectroscopy, X-ray diffraction techniques as well as electron microscopy. The hexagonal structure of MCM-41.

Подобные документы

  • The place of interdisciplinary educational technology in the system of engineering training. The role of the course of theoretical mechanics in the system of engineering disciplines. Presentation of scientific and subject knowledge of the discipline.

    статья, добавлен 12.08.2020

  • Study the structure of the coating made of composite material that contains wear-resistant components SiC-Al2O3. The use of a metallic binder based on iron in composite production. The properties of the obtained coatings with the steel counterface.

    статья, добавлен 29.01.2016

  • The way which will permit to combine existing software products in an integrated computer-aided design system for the design of given plant. Unified operations dialog interaction kernel environment and a textual description dialogue procedures.

    статья, добавлен 14.09.2016

  • The essence of ventilation systems. Operation of special ventilation shafts, requirements for the location of the ventilation shafts. The design of the ventilation system, its role in the design of complex transport systems, road and rail tunnels.

    контрольная работа, добавлен 19.02.2019

  • The comparative analysis of the microstructure, phase and chemical composition of the experimental alloys of the Fe-W type with the standardized grade ferrotungsten. The feasibility of using Fe-W for the manufacture high tungsten materials based on iron.

    статья, добавлен 30.01.2016

  • Development and value of a robotic module, whose activity will be controlled based on the perception of the image obtained from a digital camera. Features and description of the process of creating an intelligent robotic module with a camera system.

    статья, добавлен 28.08.2020

  • Іn this paper we present the microcontroller system for the diagnostics and evaluation of the Stirling engine performance. For this purpose the analysis model for the prototype engine has been developed to present the engine’s improved benchmarking result

    статья, добавлен 29.07.2016

  • An experimental study of backscattering factor for a linear accelerator Siemens Oncor Impression Plus for photon energies of 6 and 18 MV with asymmetric radiation fields. Development and implementation method for determining the backscattering factor.

    статья, добавлен 29.07.2016

  • Characteristics of an automated traffic management system based on the use of neural networks. Description of the mathematical model of the intersection. The strategy of motion control using a neurocontroller, based on the multilayer perceptron.

    статья, добавлен 22.12.2016

  • Integration of the R.I. 01 industrial robot into the working system of the BB-01 flexible line. Operational and design features of the R.I. 01 loading robot. The central spindle of the system. The horizontal frame holding the arm of the loading robot.

    статья, добавлен 25.10.2010

  • Production polystyrene composite films with small content of fullerenes (up to 1 %) by casting o-xylene solutions. A dependence of the glass transition temperature of the composite material on its composition. The adsorption capacity of polymer material.

    статья, добавлен 30.07.2016

  • Some Nano fertilizers used nowadays globally, green synthesis of nanoparticles. Research on the application of nanotechnology in crop production. Characteristics of methods of exposure to pathogenic microorganisms. Background of Nanotechnology in systems.

    статья, добавлен 18.03.2021

  • An overview of the current trend in the development, production and application of efficient biodegradable polymer materials and composites. Ways of hybrid modification of biodegradable polymeric composite for obtaining effective products based on them.

    статья, добавлен 24.09.2023

  • System for billet continuous caster’s mould heat engineering parameters monitoring. Formation of the internal heat transfer surfaces. Calculation the indicators: average heat flux density, overall heat exchange coefficient. Effective gas gap thickness.

    статья, добавлен 30.01.2016

  • Search for ways to reduce emissions of pollutants. Biomass as a composite material. Laboratory installation for glucose fermentation to ethanol. Study the concentration of xylose as a function of time. Process flow diagram of the synthesis of bioethanol.

    статья, добавлен 23.06.2018

  • Improving matching techniques constructional and technological parameters of the installation with the modes of its work taking into account the features of the resonator. The changes in the dielectric parameters of raw material during the heat treatment.

    автореферат, добавлен 30.04.2018

  • The antibacterial effect of chitooligosaccharides, evaluated against various microorganisms. The oligosaccharides from chitosan and fractionated with ultrafiltration membrane and enzymatic bioreactor. The molecular weight of chitooligosaccharides.

    реферат, добавлен 07.09.2011

  • Development of flexible-wing Micro Air Vehicles at the University of Florida. Design intent and approach, identifying airplane components, fabrication techniques and various testing methods used to assess overall airplane and component performance.

    статья, добавлен 18.01.2014

  • The investigation is focused on the evaluation of residual stresses resulting from cold deformation and welding in candidate target structural materials such as martensitic Alloys EP-823 and HT-9, and also an austenitic Type 304L stainless steel.

    магистерская работа, добавлен 14.02.2013

  • The main production methods jet fuels rocket engines. Prospects for the use of various raw materials to produce jet fuels in the context of limited energy resources. The impact of processing production and use of aviation fuels on the environment.

    статья, добавлен 23.02.2016

  • The model of spatially distributed curing process of epoxy matrix polymeric composite. The model using the projections of Pareto points set on the 8-dimensional space of design variables. Сontrol synthesis for the closed mould curing of composite spar.

    статья, добавлен 30.05.2017

  • The concept and functional characteristics of diamond-like films of amorphous carbon with a high concentration of carbon with SP3. The peculiarities of their practical use. Diagram of the coating, its physical and chemical properties, the benefits.

    статья, добавлен 12.06.2015

  • Properties and structure of hydrocarbons. Types and communication aromatics. The nature of the relationship between the carbon atoms. The methods of extraction and processing of oil. The use of the rectification columns for fractionating of raw materials.

    презентация, добавлен 30.06.2014

  • The effect of mobile messaging during a conversation on impression formation and interaction quality computers. Cellular phone use in class: implications for teaching and learning: A pilot study. The effects of “phubbing” on social inter action.

    статья, добавлен 20.01.2021

  • Description the current state of the use of natural artificial sweeteners, especially glucose-fructose syrup in the food industry. Methods of determination of the consistency of experimental samples by the method of gravitational penetration is describe.

    статья, добавлен 23.03.2018

Работы в архивах красиво оформлены согласно требованиям ВУЗов и содержат рисунки, диаграммы, формулы и т.д.
PPT, PPTX и PDF-файлы представлены только в архивах.
Рекомендуем скачать работу и оценить ее, кликнув по соответствующей звездочке.