Solar thermoelectric generator design and panel development program

Thermoelectric and mechanical performance of silicon-germanium solar thermoelectric generato

Archäologische Gesellschaft zu Berlin e. V. 2010

Sitzungsprogram

Archäologische Gesellschaft zu Berlin e. V. 2013

Sitzungsprogram

Archäologische Gesellschaft zu Berlin e. V. 2014/2015

Sitzungsprogramm

Archäologische Gesellschaft zu Berlin e. V. 2007

Sitzungsprogram

Archäologische Gesellschaft zu Berlin e. V. 2009

Vorträg

Archäologische Gesellschaft zu Berlin e. V. 2011 und 2012

Vorträg

Archäologische Gesellschaft zu Berlin e. V. 2008

Sitzungsprogram

Nanoporous Silica Polyamine Composites for Metal Ion Capture From Rice Hull Ash

Rice Hull Ash (RHA) was converted to amorphous silica gel using a modified version of published literature procedures. The gels were characterized by a comparison of their CPMAS [29] Si NMR and Scanning Electron Microscopy (SEM) images with commercial silica gels. The resulting gels were silanized with a 7.5:1 mixture of methyltrichlorosilane and chloropropyltrichlorosilane and then reacted with poly(allylamine) (PAA) to produce the silica polyamine composite (SPC) BP-1. The BP-1 was then further modified with pyridine-2-carboxaldehyde to form the copper selective SPC, CuSELECT. This procedure follows that used to produce the commercialized version of these composite materials from commercially available amorphous silica gels. The composites were characterized by solid state NMR techniques, elemental analysis, SEM, porosimetry, and metal ion capacity and selectivity. The overall goal of the project was to determine the feasibility of using RHA to make SPC. The observed strengths and weaknesses of this approach are discussed