Izvestiya of Saratov University.
ISSN 1816-9775 (Print)
ISSN 2541-8971 (Online)


цеолит

Research of Activity Pt-containing Zeolite Catalyst in Process of the Conversion of the Propane-Butane Mixture

Conversion of the propane-butane mixture at presence Pt-containing zeolite catalyst is researched at 300-500°C. It is shown that with increase in temperature of carrying out of process the yield of aromat­ic hydrocarbons, the maximum quality aromatics Ce-Ce increases reaches 40.0%wt at 500°C and a feed space velocity of raw materials 100 lr1. Conversion butanes thus reach is 94.0%.

Превращения н-гексана и стабильного гидрогенизата на поверхности высокомодульных цеолитных систем

Исследованы превращения н-гексана и стабильного гидрогенизата (температура кипения 85–180 °С) в интервале температур 250–500 °С. Установлено, что процесс превращения н-гексана включает в себя реакции крекинга, изомеризации и ароматизации. Направление химических превращений зависит от параметров активации и условий протекания процесса. Конверсия стабильного гидрогенизата позволяет получать высокооктановые компоненты топлива.

Modelling of Drying Process of Natural Gas at a Pressure of 20–25 MPa through Aluminogel and NaA 4A Zeolite

Containment of water vapor in natural gas prevents its transportation and applying as an internal combustion fuel. The most demanded drying technology is adsorption at high pressure. The construction of a mathematical model for predicting the process is a significant task. Through a mathematical model of the process of water adsorption from natural gas at pressures of 20–25 MPa and temperatures of 5–40°C in the presence of NaA 4A zeolite and aluminogel, commonly used dehumidifier, optimal drying conditions were selected.

The Transformation of n-nonane in Conditions of Catalytic Cracking on ZSM-5 and V2O5/ZSM-5 Catalysts

The daily increasing demand for high-quality motor fuels requires constant improvement and modernization of existing technologies for oil refining. One of the main secondary processes of recycling hydrocarbon raw materials in industry, which allows to obtain high-octane components of automobile gasoline, valuable liquefied gases and raw materials for petrochemical industries is catalytic cracking of various types of distillate and residual raw materials.