Share
Share on linkedin
Share on facebook
Share on twitter
fiberglass composite
Article

Rapid Catalyst Screening Using Tandem µ-Reactor GC/MS

This article describes how the Frontier Micro-Furnace Tandem µ-Reactor enables the rapid screening of laboratory-prepared catalysts, specifically carbon fiber reinforced plastic.

First, what is the Micro-furnace Tandem µ-Reactor, and how does it work?

The Micro-furnace Tandem μ-Reactor rapidly screens laboratory-prepared catalysts. A Tandem µ-Reactor consists of a pyrolysis micro-furnace and a catalytic reactor directly connected to a gas chromatograph-mass spectrometer (GC/MS) to observe real-time changes in the gas-phase catalytic products reaction between the sample and the catalyst.

The two reactors (upper and lower) are individually temperature-controlled. The upper reactor (1st Reactor) is used to preheat a gas, vaporize a liquid, or thermally decompose organic solids to generate gases. The catalyst reaction tube is packed with a catalyst and placed in the lower reactor (2nd Reactor).

Volatiles released from the heated or thermally decomposed sample stream flow into the catalyst reaction tube in the lower reactor via carrier gas flow, where they react with the catalyst. Then the products formed flow into the GC for analysis. The catalyst is evaluated by noting what compounds are found and their relative distribution using MS detection. The figure below illustrates a rapid catalyst evaluation system using the MS as the detector.

rapid catalyst evaluation system

The Tandem µ-Reactors can be used in three different modes of operations. These modes differ in how the reactor temperature is controlled. The isothermal mode has a “Post Heat” function to thermally desorb reaction products in the micro-pores of various types of catalysts. In the other two modes, the furnace temperature can be programmed in either a linear or stepwise progression, up to a maximum of 8 steps.

Pyrolysis and Reforming of Gases by Zeolite Catalysts of CFRP

A short technical note about pyrolysis and reforming of gases by zeolite catalysts of carbon fiber reinforced plastic (CFRP) is described here to demonstrates the capability of this technology.

With the optimum catalyst for the decomposition of epoxy resin, the formation of valuable products is selectively controlled in the reforming of the gases generated by the pyrolysis of CFRP. Previous studies clearly show that BEA catalysts promote the decomposition of bisphenols and suppress the formation of naphthalene.

In this note, the optimum reaction conditions for the recovery of phenol which has a higher economic value than the other reaction products, are examined using the BEA catalyst (Si/Al = 92.5). Prepreg (T700SC/2592) was used as the CFRP. 0.3 mg of CFRP was placed in an inert sample cup and introduced into the 1 st Reactor, which was heated at 500 °C. The gases generated flowed directly to a quartz reaction tube (containing the catalyst) in the 2nd Reactor. The catalytic products were separated and detected by GC/MS.

The chromatograms of the products obtained from the catalytic reforming of the gases generated from the pyrolysis of CFRP are shown below. The relative contact time with the catalyst is assumed to be directly related to the height of the packed bed in the reaction tube – assuming a constant flow at each height.

The peak intensity of phenol decreases, and the amount of naphthalene, which is considered to be a secondary product, increases as a function of contact time; thus, mg quantities of the proper catalyst will suppress the formation of naphthalene and increase the yield of phenol [Frontier Laboratories, Ltd.].

peak intensity of phenol

 

To learn more about the Frontier Tandem µ-Reactor, and how it can be applied to your analytical protocols, please contact Quantum Analytics today.

 

References: This technical content was developed by Frontier Laboratories Ltd. 4-16-20 Saikon, Koriyama, Fukushima, 963-8862 JAPAN.

 

 

Share on facebook
Share on twitter
Share on linkedin

Get the Quantum advantage

Put our expertise, strategic partnerships, and technical support capabilities to work for you.

Get updates and great content delivered right to your inbox.

Quantum Analytics Logo

27635 Commerce Oaks Drive, Suite 125, Oak Ridge North, Texas 77385

© 2021 Quantum Analytics  |  A Black Forest Ventures Company |  All Rights Reserved  |  Privacy Policy

Quantum Analytics Logo

Start a ConverSation

We look forward to working with you

Complete this form below to give us some context about you and your needs.

Our sales team will be in touch shortly!

Quantum Analytics Logo

REGISTER FOR LIVE WEBINAR

Rapid Catalyst Screening Using Tandem µ-Reactor GC/MS

Complete this form below to sign up and we will reach out to you with instructions

Quantum Analytics Logo

Request a Quote

Rapid Catalyst Screening Using Tandem µ-Reactor GC/MS

Complete this form below to give us some context about you and your needs.

Our sales team will be in touch shortly

fiberglass composite