EPSRC DTP CASE PhD Studentship in Hyperpolarised, Gas-phase Magnetic Resonance Imaging of a non-flow through Filter (ENG1209)

This project concerns understanding and improving the design and operation of combined selective catalytic reduction (SCR) (of pollutants) and (soot) filtration monoliths, used in static and transport applications, for reducing emissions from engines. In particular, the project will look at the impact of the manufacturing process on the performance of the filters. This includes looking at the spatial distribution of the washcoat, which contains the active SCR catalyst, within the channels and walls of the porous filter support block. The spatial distribution is critical as it affects the exhaust gas flow through the filter, and, thence, the pressure drop of the system, the filtration efficiency, and the accessibility and, thus, activity, of the catalyst. In order to probe the gas flow pattern in the support channels, and the permeation of gas through the walls, this project will develop and use novel gas phase NMR and magnetic resonance imaging (MRI) methods using hyperpolarised (HP) gases. Xenon gas can be hyperpolarised, and has the same kinetic diameter as methane, and thus is a good probe for obtaining the velocity profiles of flow in support channels and permeation through the walls. This work will look at the potential for bypassing of the SCR catalyst caused by an inhomogeneous distribution of washcoat. HP Xe MRI will also be used to look at the influence of channel surface roughness (eg due to washcoat deposits) on the velocity field and wall shear stress, as this impacts the particle margination effect for the soot particles being filtered. This project will also include new MRI technique development. 

The project will also give the opportunity to spend time in the Johnson Matthey company development labs working on the washcoat delivery systems for the filters, and the development of the SCR catalyst-washcoat formulation. This will give the student the opportunity to work on the whole causal progression from washcoat formulation, to washcoat distribution, to filter flow characteristics and performance. 

The student will be thoroughly trained in NMR theory, and practical spectroscopy and imaging techniques using hyperpolarised gases, at the world-class Sir Peter Mansfield Imaging Centre in Nottingham. They will also learn key catalyst characterisation techniques, such as gas sorption and mercury porosimetry, using the Nottingham GAAS suite of state-of-the-art equipment. Whilst at Johnson Matthey they will be trained in catalyst development and manufacturing methods. Hence, overall, the student will develop a set of knowledge and skills attractive to the catalyst industry, and fields also requiring similar skills, such as oil and gas, or healthcare products. 

Summary: UK/EU students - Tuition Fees paid, and (where eligible) full Stipend at an enhanced RCUK rate, which is £16,777 per annum for 2018/19, subject to annual increases for inflation. There will also be some support available for you to claim for limited conference attendance. 

Eligibility/Entry Requirements: We require an enthusiastic graduate with a 1st class degree in Chemical Engineering, Physical sciences, Chemical sciences, or related subjects, or an equivalent overseas degree (in exceptional circumstances a 2:1 class degree, or equivalent, can be considered).

Apply: This studentship will be available from October 2018. To apply please visit the University Of Nottingham application page: http://www.nottingham.ac.uk/pgstudy/apply/apply-online.aspx

When applying for this studentship, please include the reference number (beginning ENG) within the personal statement section of the application. This will help in ensuring your application is sent directly to the academic advertising the studentship. 

For any enquiries please email: Sean.Rigby@nottingham.ac.uk

This studentship is open until filled. Early application is strongly encouraged.

Closing Date: 10 Oct 2018
Category: Studentships