Chemicals & Materials

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Flow of Solids in Bins, Hoppers, Chutes and Feeders

Instructor-led (classroom) Course

Gain a strong, fundamental understanding of bulk solids and bulk solid handling equipment and their behavior, along with the general principles and practical applications of solids flow.Read more

Chem Economics: ACC Releases Portfolio of Specialty Chemicals Indexes

September

2012

Chem Economics

T. Kevin Swift

The American Chemistry Council (ACC) has launched a new set of indexes covering nearly 30 segments of the U.S. specialty chemicals market. (The first, which dealt with plastic additives, was discussed in the July issue, p. 13.) This is the first set...

Failure Mechanisms in Lithium Ion Batteries: Opportunities for Materials Development

AIChE Webinar

Sep 19, 2012

Dee Strand

This presentation will focus on the primary failure mechanisms for lithium ion batteries, how those mechanisms are affected by material selection, and vehicle applications for batteries and their future development.

Technology and Rotating Contributions / Combinations . TurboExpander - Recompressors

Mar 21, 2010

Kara R. Byrne

Today's ethylene plants incorporate Turboexpander Systems in order to optimize cryogenic recovery and energy demand. The related residue gas molecular weight and flow rates depend directly upon the selected upstream feedstock gas composition, conversion, and feedrates. Various recent ethylene units...

Effective Diffusivity Measurement in Coke-Deactivated Hydrotreating Catalyst

Mar 21, 2010

Roberto E. Galiasso Tailleur

The effective diffusivity of two fresh and two spent catalysts, previously deactivated for 18 months in a commercial unit, were determined. The effective diffusivities were measured using a shallow-bed reactor already developed for this purpose. Nitrogen, isopentane and isooctane effective...

Chemical Engineering Faculty Directory: 2009-2010

December, 2009

This faculty directory lists the contact information of all the faculty members, placement administrators, and student organizations of almost 500 worldwide universities and technical institutes offering chemical engineering curricula. This offers a comprehensive reference tool that is unique and...

Battery Design for Large Lithium and Zinc Batteries

Nov 11, 2009

G. J. Suppes

A battery design is being evaluated which is particularly useful for larger battery applications such as in PHEV and electrical grid applications. Preliminary studies validate the approach. Parametric studies are discussed which define performance curve.

Analysis of Electrode Materials for Use in Lithium Ion Cells for Automotive Applications

Nov 11, 2009

Rajeswari Chandrasekaran

Solubility Diffusivity and Swelling of Methanol in Short Side Chain Ionomeric Perfluorinated Polymers

Nov 11, 2009

Giulio Sarti

The sorption, diffusion and swelling properties of methanol vapor in a short-side-chain perfluorosulfonic acid ionomer (PFSI) membrane of equivalent weight 860 gpol/(mol(SO3H) were investigated at different activities and at temperatures between 35 and 65°C. The solubility isotherms can be well...

Aerobic Fermenter Scale-up: Why Equal Mass Transfer Scale-up Doesn't Always Work

Nov 9, 2009

Julian B. Fasano

Transferring oxygen to the liquid is only one of several steps that must occur in an aerobic fermentation. After the oxygen is transferred to the liquid, the liquid must be thoroughly mixed throughout the vessel. Then the oxygen must diffuse through the cell wall before finally being metabolized...

Solar Hydrogen Production Using Ferrite-Based Water Splitting Cycles On Al2O3 Substrates

Nov 8, 2009

Jonathan Scheffe

We are reporting the results of an alternative ferrite cycle in which the ferrite (CoFe2O4) is deposited on a porous Al2O3 support via atomic layer deposition (ALD). Rather than a traditional cycle, in which the ferrite is deposited on an inert support or is unsupported, the ferrite reacts with...

Synthesis and Characterization of New Bimetallic Spinel Oxy-Nitride Photocatalysts

Nov 8, 2009

Bharat Boppana

Photocatalysis is the acceleration of a slow reaction by a photon-assisted process with titanium dioxide (TiO2) being the material of choice for most environmental applications including hydrogen production by water splitting [1,3]. Inspite of a number of advantages like optimum band structure,...

Titania Nanotube Supported Gold Photoanodes

Nov 8, 2009

Peter Aurora

Photoelectrochemical cells (PEC) combine a photovoltaic device for light harvesting and an electrolyzer for water splitting into a single system. These cells consist of a photoanode for water oxidation and oxygen evolution, a cathode where hydrogen is evolved, and an electrolyte. A major obstacle...

Catalytic Deoxygenation of Free Fatty Acids Over Pd/C

Nov 8, 2009

Jeremy Immer

Introduction Environmental concerns and dwindling world petroleum reserves have generated great interest in producing transportation fuels from bio-renewable resources. In this work, we investigate catalytic deoxygenation of free fatty acids (FFAs) [1] to produce linear hydrocarbons for second-...

Ethylene Plant Technology - Energy Consumption and Optimization

Apr 30, 2009

Colin Bowen, Douglas C. White, Jennifer L. Romig

Recent upward trends in energy costs combined with focus on emissions of greenhouse gases has led both engineering design companies and operating companies to consider methods to optimize energy consumption of olefins units, including emphasis on the pyrolysis furnaces, compressor/turbine sets,...

New Technologies in Refining

Apr 29, 2009

Subramanya Nayak

In today’s competitive environment, development and implementation of new refining technology can differentiate one refining company from another. Whether in processing non-traditional crudes such as oil/tar sands or high sulfur crudes, extracting more from the bottom of the barrel, complying with...

LNG Safety - II

Apr 29, 2009

Morshed Rana, Ruifeng Qi, Sanjeev Saraf

This session presents advancements in LNG safety in LNG baseload and receiving terminals, LNG ships and other related areas. LNG Vapor Dispersion Consequence Modeling with CFD Codes ·<span style="&'font:" 7pt="" 'times="" new="" roman';&'=""> Have You Considered High-Pressure LNG...

LNG Safety - I

Apr 29, 2009

Harri Kytomaa, Joseph H. Cho, Sven Hoog

This session presents advancements in LNG safety in LNG baseload and receiving terminals, LNG ships and other related areas. Please Note : LNG Safety - I -- Spring Meeting 2009 includes the following recorded presentations: · Economic and Technical Challenges in Lined Rock Cavern LNG Storage System...

Ethylene Plant Operations Paper Session

Apr 29, 2009

Melissa Wiese, Michael Kennedy, Mike McLeod

This session is part of the (2009) 21st Ethylene Producers Conference, which is the premier annual event where those involved in the industry can meet to discuss mutual problems and solutions. Please Note : Ethylene Plant Operations Paper Session -- Spring Meeting 2009 includes the following...

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