Abstract
The effect of periodic temperature oscillations has been studied for the hydrogenation of 2-methyl-3-butyn-2-ol over a Pd-based catalyst in a micro-trickle bed reactor. This hydrogenation was investigated using a radiofrequency heated reactor under transient conditions using temperature cycling. The dynamic operation using this configuration was found to increase both conversion and selectivity towards 2-methyl-3-buten-2-ol compared to the steady-state operation with an improvement of up to 24% for the selectivity being observed. The developments made here also result in a lower activation energy in comparison to previous data, providing a starting point for radiofrequency heating to enhance reaction rate through the exploitation of thermal cycling at production scale.
Highlights
Transient operation has been previously considered in many industrial processes where either heat recovery or production rate can be considerably improved compared to steady-state operation
Temperature oscillations during transient operation allows for a higher rate to be obtained in the oxidation of CO or propylene and 2-propanol dehydrogenation [1,2,3,4,5,6,7,8,9]
The effect of temperature cycling was investigated by feeding 0.25 M MBY dissolved in xylene
Summary
Transient operation has been previously considered in many industrial processes where either heat recovery or production rate can be considerably improved compared to steady-state operation. An application exploiting the precise temperature control of RF heating has been shown in adsorption shown to have the potential for the scaling up of a microreactor while addressing some of the and desorption cycles to enhance safety, even when rapid heating rates are applied allowing clean drawbacks associated with the mass- and heat-transfer resistances present in conventional systems square wave modulation to be achieved [22,23]. Transient operation by switching the RF field on and off has been demonstrated allowing clean square wave modulation to be achieved [22,23] Another usage of the quick heating previously for process intensification and as an application for on-demand synthesis when the rate and response time of RF heating is seen when dealing with renewable energy supplies which are controlled release of a substance is required [25]. Figure displays a comparison of the conversion of MBY obtained during steady state and
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