Selective Hydrogenation for Fine Chemicals: Recent Trends and New Developments

This article summarizes recent trends in Croatia with regard to class analysis and class discourse. It traces the main currents both in academic debate as well as more broadly in the public sphere. Issues of class were sidelined with the outbreak of war and the rise of nationalism in the 1990s. Later, neoliberalism further weakened class and leftist discourse. Research on class has been sporadic and rare. New developments among a younger generation of leftist activists and scholars have begun to challenge the silence on class, but the main trends have not been reversed.

Download Full-text

Industrial Applications of Reactive Distillation: Recent Trends

International Journal of Chemical Reactor Engineering ◽

10.2202/1542-6580.1109 ◽

2004 ◽

Vol 2 (1) ◽

Cited By ~ 40

Author(s):

Rameshwar S Hiwale ◽

Nitin V Bhate ◽

Yogesh S Mahajan ◽

Sanjay M. Mahajani

Keyword(s):

Reactive Distillation ◽

Industrial Applications ◽

Fine Chemicals ◽

Alkyl Benzene ◽

Ongoing Research ◽

Bulk Chemicals ◽

Multiple Reactions ◽

Dramatic Rise ◽

Recent Trends ◽

Scale Of Operation

Last few years have seen a dramatic rise in the number of applications of reactive distillation (RD). This useful technology is now being applied for any scale of operation- from manufacture of fine chemicals to that of bulk chemicals. This article reviews the very recent applications and serves as a supplement for the exhaustive review on this subject by Sharma and Mahajani (2003). It not only furnishes the information on the ongoing research in the existing applications but also elaborates the newly discovered applications such as manufacture of phenol, linear alkyl benzene, carbonates, chlorosilane derivatives and chiral chemicals. Multiple reactions in RD, failure of RD in some cases and new RD configurations to increase the overall yields are some of the additional aspects being covered.

Download Full-text

Advances in Structural Systems for Tall Buildings: Emerging Developments for Contemporary Urban Giants

Buildings ◽

10.3390/buildings8080104 ◽

2018 ◽

Vol 8 (8) ◽

pp. 104 ◽

Cited By ~ 12

Author(s):

Mir Ali ◽

Kyoung Moon

Keyword(s):

Tall Buildings ◽

Structural Systems ◽

Widespread Application ◽

New Developments ◽

Retrospective Survey ◽

Complex Design ◽

Specific Complex ◽

Recent Trends ◽

Design Requirements ◽

Modified Forms

New developments of tall buildings of ever-growing heights have been continuously taking place worldwide. Consequently, many innovations in structural systems have emerged. This paper presents a retrospective survey of the main structural systems for tall buildings with emphasis on the advancements of recent, emerging, and potentially emerging systems. A structural systems chart that was previously developed by the authors has been updated in this paper to recognize, categorize and add the more recent structural systems. Recent trends of tubular structural systems in modified forms including the braced megatubes and diagrids are presented. Core-outrigger structural systems are discussed with emphasis on their adaptability. The potential of employing superframes for stand-alone and conjoined megatall buildings is predicted. As a means to solve today’s various project-specific complex design requirements, different mixed structural systems for supertall and megatall buildings are presented. This paper also discusses the widespread application of composite structural systems and recent trends of concrete cores for contemporary tall buildings. Finally, the future of tall buildings is predicted as the race for height continues.

Download Full-text

What Do We Know About Black and Minority Ethnic (BAME) Participation in UK Higher Education?

Social Policy and Society ◽

10.1017/s1474746421000579 ◽

2021 ◽

pp. 1-14

Author(s):

Jason Arday ◽

Charlotte Branchu ◽

Vikki Boliver

Keyword(s):

Higher Education ◽

Group Differences ◽

Policy Makers ◽

New Developments ◽

Academic Communities ◽

Ethnic Group Differences ◽

Recent Trends ◽

Uk Higher Education ◽

The Impact ◽

Minority Ethnic

Here, we offer a synthesis of recent evidence and new developments in relation to three broad aspects of Black and minority ethnic (BAME) students’ participation in UK higher education (HE). First, we examine recent trends in ethnic group differences in rates of access to, success within, and positive destinations beyond HE. Secondly, we examine the nature of UK universities as exclusionary spaces which marginalise BAME students in a myriad of ways, not least through curricula that centre Whiteness. Finally, we consider the impact of the marginalisation of BAME students on mental health. We argue that progress towards race equality in each domain has been hampered by white-centric discourses which continue to identify BAME students and staff as ‘other’. We highlight the important roles that academic communities and HE policy-makers have to play in advancing ethnic equality in UK universities.

Download Full-text

Renewable Cyclopentanol From Catalytic Hydrogenation-Rearrangement of Biomass Furfural Over Ruthenium-Molybdenum Bimetallic Catalysts

Frontiers in Bioengineering and Biotechnology ◽

10.3389/fbioe.2020.615235 ◽

2020 ◽

Vol 8 ◽

Author(s):

Shihang Meng ◽

Yujing Weng ◽

Xiaolong Wang ◽

Hongxing Yin ◽

Zhenfei Wang ◽

...

Keyword(s):

Catalytic Hydrogenation ◽

Selective Hydrogenation ◽

Bimetallic Catalysts ◽

Bimetallic Catalyst ◽

Catalytic Performance ◽

Fine Chemicals ◽

Product Selectivity ◽

Rearrangement Product ◽

Hydrogenation Activity ◽

Rearrangement Reaction

Biomass furfural-like compounds are chemicals that cannot be extracted from fossil materials, through which a large number of fine chemicals and fuel additives can be opened up, but one big efficiency problem during the transformation is the accumulation of oligomers. Here, we propose a novel and efficient Ru-Mo bimetallic catalyst for selective hydrogenation-rearrangement of furfural-like compounds. The result showed that an unprecedented rearrangement product selectivity of 89.1% to cyclopentanol was achieved under an optimized reaction condition over a 1%Ru−2.5%Mo/CNT catalyst reduced at 600°C. Subsequent characterization suggested that the catalyst presented with weak acidity and strong hydrogenation activity for the reaction, which not only ensures the smooth hydrogenation-rearrangement reaction but also inhibits the accumulation of furan polymers. These findings provide a convenient strategy to tune the catalytic performance of Mo-based catalysts by controlling the reduction and carburization conditions, which appear to be versatile for the rearrangement of furans and similar compounds.

Download Full-text