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Effect of cyclohexane as hydrogen-donor in ultradispersed catalytic upgrading of heavy oil
No full textThe incorporation of catalysts to enhance downhole upgrading in the Toe-to-Heel Air Injection (THAI) process is limited by deactivation due to coking arising from the cracking of heavy oil. This study aims to reduce the catalyst deactivation problems that can occur with upgrading of heavy oils. Ultradispersed catalysts particles could potentially replace pelleted catalysts which may be difficult to regenerate once deactivated during the THAI operation. The dispersed particles could potentially be applied once through, down-hole for in situ upgrading of heavy oil. The catalyst studied was finely crushed pelleted Ni-Mo/Al2O3 catalyst (2.4 µm). The product distribution of liquid, coke and gas may be influenced by the presence of a suitable hydrogen source which promotes hydroconversion reactions rather than simple cracking. In order to improve liquid yield while suppressing coke formation, the effect of cyclohexane as hydrogen-donor solvent was studied in a stirred batch reactor (100 mL) at temperature 425 oC, initial pressure 17.5 bar, agitation 500 rpm, and a short reaction time of 10 minutes. The use of cyclohexane was evaluated against that of hydrogen gas. The reaction under hydrogen atmosphere significantly reduced coke yield by 41.3 % compared with a nitrogen environment under the same conditions. Also, the coke decreased by 6.2-45.4 % as the cyclohexane:oil ratio increased from 0.01 to 0.08 (g.g-1) relative to 4.67 wt.% of coke observed without added cyclohexane in ultradispersed catalytic upgrading under nitrogen environment. As the cyclohexane:oil ratio increases, the produced oil API gravity and middle distillate fractions (200 – 343 oC) increases while the viscosity decreases. An estimated - 0.073 CH:oil ratio was found to suppress coke formation in a similar manner to upgrading under hydrogen atmosphere at the same conditions
Going Public: Diversity Disclosures by Large UK Law Firms
No full textFollowing the 2011 Legal Services Board requirement for firms to disclose the diversity of their workforce, this paper examines the implications of this regulatory intervention
The good teacher: understanding virtues in practice: research report
No full textThis report describes research focusing on virtues and character in teaching, by which we mean the kind of personal qualities professional teachers need to facilitate learning and overall flourishing in young people that goes beyond preparing them for a life of tests. The ‘good’ teacher is someone who, alongside excellent subject knowledge and technical expertise, cares about students, upholds principles of honesty and integrity both towards knowledge and student–teacher relationships, and who does good work (Campbell, 2011, 2013; Sockett, 2012; Gardner, Csikszentmihalyi and Damon, 2001; Damon and Colby, 2014). In the Framework for Character Education (Jubilee Centre for Character and Virtues, 2013), we considered the character of teachers to be a crucial ingredient in the development of flourishing children. This new report describes research that examined how teachers thought about, and drew upon, character strengths and virtues in their daily professional lives
'Typical lawyer': clones, clients and fitness for purpose in times of change
No full textIn a time of unprecedented change, when deregulation has swollen an already competitive market and the client is king, lawyers must innovate and manage client relationships. The authors examine whether there is such thing as a 'typical lawyer' and the place of such a role within a working team
Corporate Lawyers and the Public Interest
No full textExamining the role of 'public interest' in legal services regulation and its meaning in the context of corporate and finance lawyers in large firms
Temperature control repairs in Narrabri in 2015 October
No full textThe temperature drive cable was replaced, a new water-loop motor and pump was installed, and an air conditioner was replaced. The current-limit on the mount motors was increased, and the mount gears cleaned and re-lubricated
Good grief! Are there any benefits of depressive mood?
Get PDFWhat is the nature of depression? What is the role of symptoms? How people acquire and process knowledge? What makes perception more accurate
Carbon dioxide separation from nitrogen/hydrogen mixtures over activated carbon beads: adsorption isotherms and breakthrough studies
No full textSupplementary data for:
Carbon Dioxide Separation from Nitrogen/Hydrogen Mixtures over Activated Carbon Beads: Adsorption Isotherms and Breakthrough Studies
Simon J. Caldwell, Bushra Al-Duri, Nannan Sun, Cheng-gong Sun, Colin E. Snape, Kaixi Li, and Joseph Wood
Energy & Fuels, 2015, 29 (6), pp 3796–3807
DOI: 10.1021/acs.energyfuels.5b00164
Publication Date (Web): May 26, 201
Symbolism over Substance? Large Law Firms and Corporate Social Responsibility
No full textFirst draft of a paper which now appears in the journal 'Legal Ethics' Volume 18(2)
This paper considers the individual CSR policies of the top 100 English Law firms (as ranked by the trade publication 'The Lawyer'), what the firms categorise as constituting CSR activity and the public disclosures they make. The research highlights that few firms explain why they are committed to CSR and the quality of disclosures varied so widely that meaningful comparison was not possible
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