PROJECT BG05M2OP001-1.001-0008 | NATIONAL CENTER OF MECHATRONICS AND CLEAN TECHNOLOGIES

Managers:

Prof. Tamara Petkova, PhD (Institute of Electrochemistry and Еnergy Systems – BAS)

e-mail: tpetkova@iees.bas.bg

Assist. Prof. PhD. Ivalina Trendafilova/As. Hristina Lazarova (Institute of Organic Chemistry with Centre of Phytochemistry)

e-mail: ivalina@orghm.bas.bg; lazarova@orghm.bas.bg

phone: 00359 2 9606 111

The laboratory studies the behaviors of materials with temperature changes. By measuring the temperatures and heat fluxes correlated with thermal transitions in the materials under study, the changes that correspond to a change in their structure, composition and phase state are determined. Thermal analysis which allows the study of weight and phase changes in the composition of the metal/metaloxide nanoparticles in bulk or supported on porous materials during the thermal treatment in different gas media (inert, oxidative, reductive) is performed. The detailed characterization of the materials used as catalysts is a prerequisite for achieving highly efficient clean technologies. Potential partners and customers of the laboratory could be research teams and companies developing and producing new materials in various industries.

ACTIVITIES

The available instruments can be used to:

  • Obtaining data relating to the behaviour of materials. They and related to the determination of::
    -Specific heat capacity
    -Polymorphism
    -Melting and crystallization
    - Phase transitions / diagrams
    - Degree of crystallinity
    -Glass transition temperatures
    - Oxidative stability
    -Onset of decomposition
  • Study of redox processes in nano-sized metal oxides, metal/metaloxide modified mesoporous silicas, zeolite catalysts and others;
  • Study of phase changes during the thermal treatment in different gas media (inert, oxidative, reductive).

SERVICES

The services offered are:

  • Determination of thermal stability of the material;
  • Determination of phase transition temperatures - glass transition temperature, crystallization temperature, melting temperature;
  • Determination of degree of crystallinity;
  • Determination of specific heat capacity of the material;
  • Determination of weight changes in materials during the thermal treatment in different gas media (inert, oxidative, reductive) for the investigation of redox processes;
  • Determination of phase transformations in the thermal treatment of materials, such as nano-sized metal oxides, modified mesoporous silicates and zeolites in different media (inert, oxidative, and reductive).

EQUIPMENT

Differential scanning calorimeter DSC 404 F3 Pegasus working in a wide temperature region from  -150оС to 1600оС suitable for determination of heat capacity.

The apparatus for thermogravimetric analysis STA449F5 Jupiter of NETZSCH Gerätebau GmbH allows combined TG/TG-DSC and TG-DTA measurements. The system has a top loading with a vertical design and working with samples from 3 mg to 35 g and a resolution above 0.1 μg with a rate of 0.1 to 50oC/min. The apparatus is equipped with a vacuum pump to evacuate the working space and can operate in different gas media: inert, oxidative, reductive, with automatic gas control with a built-in controller to deliver a minimum of 2 gases, adjusted by pressure and flow rate (from 5 to 250 ml/min with a resolution of 1 ml/min) simultaneously.

NEWS