- Che-courtesy-list - ecn.purdue.edu

WebEx Meeting Link
by Jackson, Christa N 30 Nov '15

30 Nov '15

Hello All, I have scheduled the WebEx training. If you are unable to physically attend but want to see what the training is about click this link on this date and time: December 11, 2015 at 2:00<https://purdue.webex.com/purdue/onstage/g.php?MTID=e42071f3df10ff38941b93cf…>. You may also connect by calling in 1-855-282-6330 and using access code: 640 062 560. Thank you, Christa Jackson Hello, With WebEx becoming more popular, I have set up for ITap to have a training in Forney on December 11 at 2:00 pm in 3059. I will send out a reminder closer to the date along with the WebEx link to be able to join the training if you are unable to attend. In the meantime if you have not already done this, go to https://purdue.webex.com/mw3000/mywebex/default.do?siteurl=purdue using your career account to get started. I look forward to seeing you soon. Thank you, Christa Jackson Forney Hall School of Chemical Engineering, 480 Stadium Mall Drive Room1060 West Lafayette, IN 47907 Phone(765)494-4050 jacksonc(a)purdue.edu<mailto:jacksonc@purdue.edu>

1 0

Thesis Announcement for Yankai Cao
by Johnson, Beverly J 30 Nov '15

30 Nov '15

This e-mail is to announce that Yankai Cao will be defending his dissertation, PARALLEL ALGORITHMS FOR NONLINEAR PROGRAMMING AND APPLICATIONS IN PHARMACEUTICAL MANUFACTURING, on Friday, December 4th, at 12:00 p.m. in FRNY 3062B. The dissertation is directed by Dr. Laird, and the abstract is attached. All are welcome to attend. Bev Johnson Graduate Program Administrator Chemical Engineering Forney Hall 1051 Purdue University 765-494-4057

1 0

Grad Seminar announcement
by Vigar, Jill K 30 Nov '15

30 Nov '15

[https://marketing.purdue.edu/Email/TemplateSets/ChE/Templates/Template04/Im…]<https://engineering.purdue.edu/ChE> Purdue University School of Chemical Engineering Graduate seminar series Dr. Jeffrey Greeley School of Chemical Engineering Purdue University "Life at the Interface: Using First Principles Calculations to Elucidate Structures and Mechanisms of Catalysts" Tuesday, December 1, 2015 3:00 - 4:15 p.m. FRNY G140 Reception at 2:30 p.m. in Henson Atrium Biography Prof. Jeffrey Greeley obtained his PhD from Department of Chemical Engineering at the University of Wisconsin-Madison in 2004. Following two years of postdoctoral work at the Technical University of Denmark, he moved to Argonne National Laboratory where he served for six years as a staff scientist before joining the School of Chemical Engineering at Purdue University in 2013. Professor Greeley's research group at Purdue focuses on the use of first principles Density Functional Theory calculations to understand chemical processes at surfaces and interfaces. His primary interests are in the areas of heterogeneous catalysis and electrocatalysis, and his work has led to the prediction and successful testing of improved electrocatalysts for the oxygen reduction and hydrogen evolution reactions. He has published over 100 research articles in this field. Abstract The growing sophistication of electronic structure algorithms, coupled with increases in available computer power, has, in recent years, enabled first principles calculations to grow into a powerful tool for the understanding and design of heterogeneous catalysts. Such techniques have provided molecular-level understanding of trends in the reactivity of a variety of petrochemically-relevant fuels on metal and oxide surfaces and have, in some cases, led to the identification of novel catalysts with superior properties. In this presentation, I will describe recent efforts in our group, as well as other researchers at Purdue, to extend traditional computational catalyst methods to permit both evaluation of reactivity trends for highly complex reaction networks, with potentially hundreds of elementary steps, and development of representative models of so-called three-phase boundaries that are found at the interface between catalytic metals, supporting oxides, and the surrounding environment. I will outline the development of DFT-based strategies to map the reaction networks associated with hydrogen production on metal surfaces, and I will discuss the application of these strategies to produce semi-quantitative predictions of activity and selectivity trends on these catalysts. These, and related, catalytic processes may be powerfully affected by the structural complexity of catalytic surfaces, and to address such challenges, I will present simple methods that are useful for both predicting the atomic-level structure of three-phase metal/oxide/environment boundaries and estimating catalytic parameters at these boundaries. I will close with a brief discussion of how descriptor-based searches for new catalysts might ultimately be realized for these complex systems. School of Chemical Engineering<https://engineering.purdue.edu/ChE> Purdue University West Lafayette, IN 47907 (765) 494-4050<tel:+17654944050> (c) 2015 Purdue University<http://www.purdue.edu/purdue/disclaimer.html> All rights reserved An equal access/equal opportunity university<http://www.purdue.edu/purdue/ea_eou_statement.html>

1 0

Happy Thanksgiving!
by Farmus, Cristina D 25 Nov '15

25 Nov '15

On my list of things that I am grateful about are my Chemical Engineering colleagues and students. I hope everyone feels the same. Enjoy a peaceful Thanksgiving! Cristina Farmus [cid:image001.jpg@01D12795.48EF7CC0]

1 0

Grad Seminar announcement
by Vigar, Jill K 25 Nov '15

25 Nov '15

[https://marketing.purdue.edu/Email/TemplateSets/ChE/Templates/Template04/Im…]<https://engineering.purdue.edu/ChE> Purdue University School of Chemical Engineering Graduate seminar series Dr. Jeffrey Greeley School of Chemical Engineering Purdue University "Life at the Interface: Using First Principles Calculations to Elucidate Structures and Mechanisms of Catalysts" Tuesday, December 1, 2015 3:00 - 4:15 p.m. FRNY G140 Reception at 2:30 a.m. in Henson Atrium School of Chemical Engineering<https://engineering.purdue.edu/ChE> Purdue University West Lafayette, IN 47907 (765) 494-4050<tel:+17654944050> (c) 2015 Purdue University<http://www.purdue.edu/purdue/disclaimer.html> All rights reserved An equal access/equal opportunity university<http://www.purdue.edu/purdue/ea_eou_statement.html>

1 0

Thesis Announcement for Nathan B Davis
by Johnson, Beverly J 25 Nov '15

25 Nov '15

This e-mail is to announce that Nathan B Davis will be defending his dissertation, Granulation Behavior of Ultra-Fine Powders: Examination of Granule Microstructure, Consolidation Behavior, and Powder Feeding, on Thursday, December 3rd, at 1:30 p.m. in POTR 234. The dissertation is directed by Dr. Litster, and the abstract is attached. All are welcome to attend. Bev Johnson Graduate Program Administrator Chemical Engineering Forney Hall 1051 Purdue University 765-494-4057

1 0

Thesis announcement for Daniel Pohlman
by Johnson, Beverly J 24 Nov '15

24 Nov '15

This e-mail is to announce that Daniel Pohlman will be defending his dissertation, MULTI-SCALE MODELING OF HIGH-SHEAR GRANULATION, on Monday, November 30th, at 4:00 p.m. in POTR 234. The dissertation is directed by Dr. Litster, and the abstract is below. All are welcome to attend. ABSTRACT High shear wet granulation is a particle design process used to increase the size of a primary powder material through the addition of liquid binder. This thesis focuses on the multi-scale nature of high-shear granulation in order to understand behavior changes due to coupled consolidation and coalescence as well as operational changes that occur during the scale up of horizontal ploughshare mixer granulators. The methodology relied on a micro-scale model for coalescence, a meso-scale model to describe flow within the granulator and a macro-scale population balance to describe the whole system. A physically based coalescence model was adapted to the 3D population balance model framework as a function of the granule internal property coordinates: solid volume, liquid volume, and gas volume. An empirical correlation was used to describe granule mechanical properties based on measured peak flow stress as a function of granule composition and strain rate. In this case study a well characterized but complex industrial formulation was used. The model predicts that rebound collision will occur early in the granulation and cause densification. As these granules consolidate and become stronger there is some critical composition at which the internal pore space is saturated with liquid and a film comes to the surface. This micro-scale model is able to predict induction time based on understanding of consolidation. The model is validated by semi-quantitative comparison with experimental studies in a 50 L horizontal axis high shear granulator. Measurements of the size, porosity and morphology are used to verify rate process mechanisms over the course of the wet granulation process. The class of growth behavior and the length of the induction time are correctly predicted by the micro-scale model. Scale up experiments were conducted to validate and test the predictions of the compartment model approach. Traditional scaling rules of constant impeller Froude number and constant impeller tip speed were shown to be ineffective at producing similar granule size distributions or porosities across granulator volumes of 10L, 20L and 50L. Scale of the granulator had a large effect on product attributes and overall granulation behavior. At the 10L scale the extent of breakage was limited and product size distributions remained broad. At the 20L scale the distributions narrowed slightly compared to the 10L and the rate of consolidation increased. The 50L product properties had a narrow, desirable size distribution. The breakage and consolidation at the 50L scale broke the granular clumps and consolidation rate was again higher that at the 20L. The 50L granulator's behavior transitioned to granule growth showing that traditional scaling rules may not even predict overall granulation behavior. Because this change in behavior was due to the high extent of consolidation, a new scaling rule for the consolidation rate was developed for horizontal mixers across these scales. This is the first time a scaling rule has been determined across granulator scales with the ability to predict dramatic changes due to complex consolidation coupled coalescence. A two compartment population balance model was developed to physically represent the flow heterogeneity and rate process segregation that occurs in a horizontal high-shear mixer granulator. It was composed of two zones, a circulation zone that represents the bulk of the mixer, and a breakage zone representing the high-speed chopper knives that are used to break up clumps and large granules. Flow between the two zones was determined by a heuristic and rules for model scale up were developed. The model includes expressions for consolidation coupled coalescence, and consolidation of granules in the circulation zone, and breakage is modeled in the breakage zone. This two compartment 2D population balance model predicted scale up distributions well from the 10L to 20L and 50L granulator experiments. The compartmental population balance model is a useful tool that can be applied to different scales and types of granulators by configuring the appropriate meso-scale compartmental arrangement, and determining the which rate processes belong in each compartment. Thank you! Bev Johnson Graduate Program Administrator Chemical Engineering Forney Hall 1051 Purdue University 765-494-4057

1 0

Seth
by Johnson, Beverly J 24 Nov '15

24 Nov '15

This e-mail is to announce that Arpan Seth will be defending his dissertation, ADVANCED MODELING AND EFFICIENT OPTIMIZATION METHODS FOR REAL-TIME RESPONSE IN WATER NETWORKS, on Monday, November 30th, at 2:00 p.m. in FRNY 3062B. The dissertation is directed by Dr. Laird, and the abstract is attached. All are welcome to attend. Thank you! Bev Johnson Graduate Program Administrator Chemical Engineering Forney Hall 1051 Purdue University 765-494-4057

1 0

EPA inspection yesterday
by Nagy, Gabriela 19 Nov '15

19 Nov '15

Hello everyone, As you know, EPA representatives inspected different labs on campus yesterday and as part of their inspection they visited 4 labs in our building (FRNY 3190, 3184, 3150 and 2153). The inspectors also talked to the graduate students working in the labs they visited; everyone did a good job on handling their questions. No violations were found and Adam Krajicek from REM, who accompanied the EPA inspector, informed me that the inspector was happy to see that we are in compliance. Well done to everyone and keep up the good work you do! Thank you for your commitment to safety! Gabriela On behalf of the ChE Safety Committee __________________ Gabriela Nagy, PhD Industrial Education Director ChE Safety Committee Chair School of Chemical Engineering Room FRNY G051 Purdue University Tel: (765)-496-1710 E-mail: nagyg(a)purdue.edu<mailto:nagyg@purdue.edu> From: Nagy, Gabriela Sent: Wednesday, November 18, 2015 9:30 AM To: chmegrad(a)ecn.purdue.edu; chepostdoc(a)ecn.purdue.edu Cc: McGlothlin, Ricky L <mcglothr(a)purdue.edu> Subject: EPA inspection Importance: High Hello everyone! Environmental Protection Agency (EPA) representatives are on campus today, performing inspections of labs to check for compliance with the hazardous waste storage and disposal regulations in the lab. It became customary that EPA is visiting our building whenever they are on campus for inspections, therefore we can expect their visit on this occasion, too. Please ensure that all chemical containers in the lab are closed and labeled correctly, including the HPLC waste containers. Thank you for your commitment to safety! Gabriela, On behalf of the ChE safety Committee __________________ Gabriela Nagy, PhD Industrial Education Director School of Chemical Engineering Room FRNY G051 Purdue University Tel: (765)-496-1710 E-mail: nagyg(a)purdue.edu<mailto:nagyg@purdue.edu>

2 1

FW: "a time to reflect and start the conversation"
by Varma, Arvind 19 Nov '15

19 Nov '15

Pl read the important message below – thank you. Arvind Varma R. Games Slayter Distinguished Professor Jay and Cynthia Ihlenfeld Head of Chemical Engineering Purdue University From: Engfaculty-list [mailto:engfaculty-list-bounces@ecn.purdue.edu] On Behalf Of Jamieson, Leah H. Sent: Thursday, November 19, 2015 8:06 AM To: Engfaculty-list(a)ecn.purdue.edu; Engap-list(a)ecn.purdue.edu; Engcs-list(a)ecn.purdue.edu Subject: "a time to reflect and start the conversation" College of Engineering Colleagues - Diversity is a core value of Purdue’s College of Engineering. Recent events around the country and at Purdue remind us - as some of our students, faculty, and staff are reminded every day - that we have much work to do to create a place that is genuinely diverse, welcoming, and inclusive. There will be no simple solution, there is no easy answer. I know, though, that it will take the entire community to make this a better place. For that reason, I am gong to borrow words from a message that ECE Professor Mimi Boutin sent to the ECE faculty. Their simplicity speaks volumes: "I would like to encourage each one of you to take a moment to read this collection of students' experiences with racism on campus, and to reflect on these: https://shareyournarrativeblog.wordpress.com<https://shareyournarrativeblog.wordpress.com/> Let's start the conversation.” We can and will add structure, discussions, programs, plans - but right now let us listen to our students' stories and let those stories give new empathy and renewed urgency to the conversation - because creating a respectful, welcoming climate is something that must belong to all of us. leah --- Leah H. Jamieson The John A. Edwardson Dean, College of Engineering Ransburg Distinguished Professor of Electrical and Computer Engineering Neil Armstrong Hall +1 765 494 5346 701 West Stadium Avenue +1 765 494 9321 (fax) Purdue University West Lafayette, IN 47907-2045 lhj(a)purdue.edu<mailto:lhj@purdue.edu> https://engineering.purdue.edu/Engr<http://www.ece.purdue.edu/~lhj>

1 0