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LDRD final report on new homogeneous and supported oligomerization catalysts (LDRD 42461).

Description: The overall purpose of this LDRD is multifold. First, we are interested in preparing new homogeneous catalysts that can be used in the oligomerization of ethylene and in understanding commercially important systems better. Second, we are interested in attempting to support these new homogeneous catalysts in the pores of nano- or mesoporous materials in order to force new and unusual distributions of a-olefins to be formed during the oligomerization. Thus the overall purpose is to try to prepare… more
Date: November 1, 2004
Creator: Hascall, Anthony G. & Kemp, Richard Alan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Summary report : universal fuel processor.

Description: The United States produces only about 1/3 of the more than 20 million barrels of petroleum that it consumes daily. Oil imports into the country are roughly equivalent to the amount consumed in the transportation sector. Hence the nation in general, and the transportation sector in particular, is vulnerable to supply disruptions and price shocks. The situation is anticipated to worsen as the competition for limited global supplies increases and oil-rich nations become increasingly willing to man… more
Date: January 1, 2008
Creator: Coker, Eric Nicholas; Rice, Steven F. (Sandia National Laboratories, Livermore, CA); Kemp, Richard Alan; Stewart, Constantine A.; Miller, James Edward; Cornelius, Christopher James et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

LDRD final report on "fundamentals of synthetic conversion of CO2 to simple hydrocarbon fuels" (LDRD 113486).

Description: Energy production is inextricably linked to national security and poses the danger of altering the environment in potentially catastrophic ways. There is no greater problem than sustainable energy production. Our purpose was to attack this problem by examining processes, technology, and science needed for recycling CO{sub 2} back into transportation fuels. This approach can be thought of as 'bio-inspired' as nature employs the same basic inputs, CO{sub 2}/energy/water, to produce biomass. We ad… more
Date: November 1, 2009
Creator: Maravelias, Christos T. (University of Wisconsin, Madison, WI); Kemp, Richard Alan; Mavrikakis, Manos (University of Wisconsin, Madison, WI); Miller, James Edward & Stewart, Constantine A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

LDRD final report on "controlled synthesis of nanocrystalline catalysts <U+2013> from solutions to supports".

Description: Control of nanoparticle size is crucial to the development of nanotechnology. At this point in time, no general, rational synthetic strategy for controlling nanocrystal diameters and producing narrow diameter distributions has emerged. This is a reflection of a poor understanding of the mechanisms for nanocrystal growth. Based on previous studies of bismuth and gold nanoparticle growth, this work clearly establishes two new synthetic approaches to controlled growth of colloidal Pt nanocrystals,… more
Date: December 1, 2006
Creator: Buhro, William E. (Washington University in St. Louis, St. Louis, MO); Richards, Vernal (Washington University in St. Louis, St. Louis, MO); Lattman, Micheal; Resler, Shawn P. (Washington University in St. Louis, St. Louis, MO) & Kemp, Richard Alan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Photovoltaic self-assembly.

Description: This late-start LDRD was focused on the application of chemical principles of self-assembly on the ordering and placement of photovoltaic cells in a module. The drive for this chemical-based self-assembly stems from the escalating prices in the 'pick-and-place' technology currently used in the MEMS industries as the size of chips decreases. The chemical self-assembly principles are well-known on a molecular scale in other material science systems but to date had not been applied to the assembly… more
Date: October 1, 2010
Creator: Lavin, Judith; Kemp, Richard Alan & Stewart, Constantine A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Main group adducts of carbon dioxide and related chemistry (LDRD 149938).

Description: This late-start LDRD was broadly focused on the synthetic attempts to prepare novel ligands as complexing agents for main group metals for the sequestration of CO{sub 2}. In prior work we have shown that certain main group (p block elements) metals such as tin and zinc, when ligated to phosphinoamido- ligands, can bind CO{sub 2} in a novel fashion. Rather than simple insertion into the metal-nitrogen bonds to form carbamates, we have seen the highly unusual complexation of CO{sub 2} in a mode t… more
Date: November 1, 2010
Creator: Barry, Brian M. (University of New Mexico, Albuquerque, NM); Kemp, Richard Alan; Stewart, Constantine A. & Dickie, Diane A. (University of New Mexico, Albuquerque, NM)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

LDRD final report on new homogeneous catalysts for direct olefin epoxidation (LDRD 52591).

Description: This report summarizes our findings during the study of a novel homogeneous epoxidation catalyst system that uses molecular oxygen as the oxidant, a ''Holy Grail'' in catalysis. While olefins (alkenes) that do not contain allylic hydrogens can be epoxidized directly using heterogeneous catalysts, most olefins cannot, and so a general, atom-efficient route is desired. While most of the work performed on this LDRD has been on pincer complexes of late transition metals, we also scouted out metal/l… more
Date: February 1, 2006
Creator: Goldberg, Karen (University of Washington); Smythe, Nicole A. (University of Washington); Moore, Joshua T.; Stewart, Constantine A.; Kemp, Richard Alan; Miller, James Edward et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Chiral multichromic single crystals for optical devices (LDRD 99406).

Description: This report summarizes our findings during the study of a novel system that yields multi-colored materials as products. This system is quite unusual as it leads to multi-chromic behavior in single crystals, where one would expect that only a single color would exist. We have speculated that these novel solids might play a role in materials applications such as non-linear optics, liquid crystal displays, piezoelectric devices, and other similar applications. The system examined consisted of a ma… more
Date: December 1, 2006
Creator: Kemp, Richard Alan & Felix, Ana M. (University of New Mexico, Albuquerque, NM)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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