Use of EnviroxTM fuel borne catalyst to

improve fuel efficiency and reduce PM

emissions

Dr Barry Park

Chief Operating Officer

9th June 2009

Oxonica at a glance

Company

• University of Oxford spin-out, now almost 10 years old

• Located on University of Oxford Science Park and maintains strong

links with the University

• Floated on AIM in July 2005

Technology

• Expertise in nanomaterials science and technology

• Focus on Energy, Materials, Healthcare and Security

• Oxonica Energy has extensive experience in the fuels industry

Team and Collaborations

• 35 employees, strong commercial and industrial experience

• Wide-ranging collaborations to develop and commercialise Oxonica’s

nanotechnology based products

Oxonica is a leading international nanotechnology company

Four revenue generating businesses:

Oxonica at a glance

Materials

Optisol™

Solacor™

UV absorbers

Diagnostics

Nanoplex™

Multiplexed

disease

detection

Energy

Envirox™

Fuel

combustion

catalyst

Security

Confidential

uses

Fuel Combustion Catalyst - Market Drivers

• Reductions in oil stocks limiting future supply of

fossil fuels

• High fuel prices likely to continue for some time,

maybe forever

• Environmental pressures

Oxonica’s solution:

ENVIROXTM - Fuel combustion catalyst based on

nanoparticulate cerium oxide

Catalytic ConverterCatalytic ConverterCatalytic ConverterCatalytic Converter

Technology concept

Engine

CeO2

FuelCatalytic

Converter

Oxidation Catalyst in the diesel fuelOxidation Catalyst in the diesel fuelOxidation Catalyst in the diesel fuelOxidation Catalyst in the diesel fuel= Benefits throughout the engine= Benefits throughout the engine= Benefits throughout the engine= Benefits throughout the engine

Technology concept

Envirox™ Technology

• Cerium oxide = well known oxidation catalyst

• 10 nanometre particles of cerium oxide

• High surface area

• Surface layer of ‘active oxygen’ due to lattice strain

• Dispersed in hydrocarbon solvent

• Dose level = 5 to 10 mg/litre (5-10 ppm)

• City Bus Hong Kong 2002/3 field trial, 80 vehicles9 - 11 % fuel consumption improvement

• Stagecoach UK 2003/4 field trial, over 1000 vehicles5 – 7 % fuel consumption improvement

• Stagecoach UK 2007 field trial, over 500 vehicles4.3 % fuel consumption improvement

• Niederzier Germany 2007, municipal fleet6% fuel consumption improvement

• Loevenich Reisen (Germany) 2007, coach tour fleet6% fuel consumption improvement

• Ural Mining and Metallurgical Company (Russia) 2008,7% fuel consumption improvement

Saves Fuel

Saves Fuel – Hong Kong trial

Saves Fuel – Stagecoach NW, 2004

Mean Difference in Fuel Economy

Rural Fleet Trial

0

1

2

3

4

5

6

7

8

3 4 5 6 7 8 9 10 11

Periods

% Improvement

3 month rolling average

• The catalytic effect of EnviroxTM reduces

existing carbon deposits and prevents build up of

additional carbon deposits within the engine,

particularly on the cylinder head piston crown

Without Envirox™ With Envirox™

Cleans Engines

• Carbon dioxide (CO2)

Directly linked to fuel consumption, every tonne of fuel saved

reduces CO2 by approximately 3 tonnes

Minimal energy used to produce Envirox™

• Particulates (PM)

Up to 18% reductions observed

• Hydrocarbons (HC)

Up to 13% reductions observed

• Carbon monoxide (CO)

Up to 6% reductions observed

Lowers Harmful Emissions

Envirox™ Emissions Performance

Laboratory Environment Testing

UK Fleet Scenario

• 5% fuel saved

• Fuel price = 108 pence/litre (excl VAT)

• Additive cost = 15% of saving

• Fleet consumes 1 million litres/year

Net Cost Saving = £45,900

Financial benefit

UK Fleet Scenario

• 5% fuel saved

• Negligible energy consumed in Envirox™

manufacture and supply

• Fleet consumes 1 million litres/year

Net CO2 Reduction = 132 tonnes

Environmental benefit

Customer Scenario - Benefits

• Net Cost Saving = £3.8 million/year

• Net CO2 Reduction = 24,500 tonnes/year

Customer Scenario - Benefits

'Our vehicles have driven more than 700 million miles on Envirox™, and

to achieve a consistent result across a diverse fleet over 3 years

testifies to the robustness of the technology. We are particularly

pleased with the performance of the product both in ultra low sulphur

diesel and in blends containing biodiesel, which are now in widespread

use across our fleet'.

Adrian Havlin, Stagecoach Group Technical Engineer

Addition to fuel - bulk

• EnviroxTM is provided to a bus or truck depot as

a 2% concentrate of cerium oxide in

hydrocarbon in 205 litre drum

• Oxonica installed dosing unit monitors fuel

delivered by tanker and doses appropriate

amount of EnviroxTM into fuel

• Level of cerium oxide in diesel is then 5 mg/litre

or 5ppm

• Vehicles can then be fuelled using this additised

diesel as if it were pure diesel

Envirox™ Dosing Unit

Fuel Tank

Envirox

Pump

Injection

Valve

Tank Inlet

Fuel Tank

Envirox

Pump

Injection

Valve

Tank Inlet

Addition to fuel – direct

• EnviroxTM may be added to fuel tanks on vehicles

in two different ways

• An on board dosing unit can be supplied and

fitted to a vehicle to deliver EnviroxTM to fuel

directly before delivery into the engine

• Alternatively, an EnviroxTM Driver Pack can be

purchased and a measured amount added to the

vehicle tank when diesel is added at the pump

• EnviroxTM Driver Packs can be purchased online

at www.enviroxdriverpack.com where a worked

example shows projected savings from use of

EnviroxTM

• Liquid additive for diesel fuel

• Fuel combustion catalyst

• Based on nanoparticulate cerium oxide

• Improves fuel economy by 4-10%

• Reduces harmful emissions up to 18%

• Easy to use – dosing units

• Available now

Summary