Procedure for Measuring the Mass Fractions of Products of the Catalytic Ethylbenzene Pyrolysis Reaction

Abstract

A technique is proposed for determining the mass fractions of products of the catalytic ethylbenzene pyrolysis reaction on a capillary column with functionalized poly(1-trimethylsilyl-1-propyne) (PTMSP/N₂O). The capillary column with PTMSP/N₂O selectively separates methane, ethane, ethylene, and acetylene (light C₁–C₂ hydrocarbons), along with benzene, toluene, ethylbenzene, and styrene (aromatic hydrocarbons). A procedure is developed to measure the mass fractions of light (C₁–C₂) and aromatic hydrocarbons in the gas phase. The ranges of analytical measurement are 2.9 × 10⁻⁸ to 1.2 × 10⁻¹ mg/mL for light C₁–C₂ hydrocarbons and 3.5 × 10⁻¹¹ to 4.0 × 10⁻³ mg/mL for liquid hydrocarbons. The under conditions of repeatability is 1.9–4.7%.