Effective Volumetric Factor for Inhomogeneous Temperature in Volumetric Measurements of Gas Absorption and Desorption

TL;DR

This paper introduces an analytical method to calculate an effective volumetric factor accounting for inhomogeneous temperature distributions in gas absorption and desorption measurements, simplifying procedures without pre-calibration.

Contribution

It presents a novel analytical approach to determine the volumetric correction factor for inhomogeneous temperature profiles in volumetric gas measurements.

Findings

The calculated volumetric factor agrees well with experimental results.

The method can be applied to any volumetric measurement with temperature inhomogeneity.

It eliminates the need for pre-calibration with noble gases.

Abstract

Accounting of effective volumetric factor for the measurement at inhomogeneous temperature allows to the simplify the measurement process avoiding a pre-calibration with a noble gas. The volumetric correction in form of the volumetric factor is calculated analytically by modeling of the temperature profile in the volumetric apparatus, and provides a quite agreement with the measured results. The calculation can be applied for each volumetric measurement with an inhomogeneous temperature distribution.