Particle packed columns and monolithic columns in high-performance liquid chromatography-comparison and critical appraisal
KK Unger, R Skudas, MM Schulte - Journal of Chromatography A, 2008 - Elsevier
The review highlights the fundamentals and the most prominent achievements in the field of
high-performance liquid chromatography (HPLC) column development over a period of …
high-performance liquid chromatography (HPLC) column development over a period of …
Recent developments in the evaluation of chemically bonded silica packings for liquid chromatography
KK Unger, N Becker, P Roumeliotis - Journal of Chromatography A, 1976 - Elsevier
The basic variables and conditions in the synthesis of chemically bonded silica packings (CBSPs),
obtainable by means of a surface reaction between porous silica and an …
obtainable by means of a surface reaction between porous silica and an …
Synthesis of spherical porous silicas in the micron and submicron size range: challenges and opportunities for miniaturized high-resolution chromatographic and …
KK Unger, D Kumar, M Grün, G Büchel, S Lüdtke… - … of Chromatography A, 2000 - Elsevier
Classical silica technology has reached its limit with respect to an ultimate minimum particle
size of about 2 μm in diameter. Here, a novel process is presented which allows one to …
size of about 2 μm in diameter. Here, a novel process is presented which allows one to …
Recommendations for the characterization of porous solids (Technical Report)
J Rouquerol, D Avnir, CW Fairbridge… - Pure and applied …, 1994 - degruyter.com
RECOMMENDATIONS FOR THE CHARACTERIZATION OF POROUS SOLIDS Page 1 Pure
& Appl. Chern., Vol. 66, No. 8, pp. 1739-1758, 1994. Printed in Great Britain. Q 1994 IUPAC …
& Appl. Chern., Vol. 66, No. 8, pp. 1739-1758, 1994. Printed in Great Britain. Q 1994 IUPAC …
The synthesis of micrometer‐and submicrometer‐size spheres of ordered mesoporous oxide MCM‐41
M Grün, I Lauer, KK Unger - Advanced Materials, 1997 - Wiley Online Library
Spherical particles of the mesoporous material MCM‐41 have been synthesized and are
reported for the first time. The results of characterization of the samples by X‐ray diffraction, …
reported for the first time. The results of characterization of the samples by X‐ray diffraction, …
[BOEK][B] Porous silica
KK Unger - 1979 - books.google.com
2.2. 2 Origin of porosity in silica.--2.3 Controlled porosity silica packings........ 2.3. 1 Modified
sol—gel procedure followed by sintering. 2.3. 2 Polyethoxysiloxane procedure.......... 2.3. 3 …
sol—gel procedure followed by sintering. 2.3. 2 Polyethoxysiloxane procedure.......... 2.3. 3 …
Capillary hysteresis in nanopores: theoretical and experimental studies of nitrogen adsorption on MCM-41
Capillary hysteresis in cylindrical nanopores has been studied using MCM-41 as the prime
example of a mesoporous material. These materials, due to their regular pore structure, can …
example of a mesoporous material. These materials, due to their regular pore structure, can …
Novel pathways for the preparation of mesoporous MCM-41 materials: control of porosity and morphology
M Grün, KK Unger, A Matsumoto, K Tsutsumi - … and mesoporous materials, 1999 - Elsevier
Two novel synthesis routes for the preparation of mesoporous MCM-41 materials are
introduced. Both methods use tetra-n-alkoxysilanes such as tetraethoxysilane (TEOS) or tetra-n-…
introduced. Both methods use tetra-n-alkoxysilanes such as tetraethoxysilane (TEOS) or tetra-n-…
Novel synthesis of spherical MCM-48
K Schumacher, M Grün, KK Unger - Microporous and Mesoporous …, 1999 - Elsevier
A novel synthesis route was developed for the cubic member of the M41S family, MCM-48,
with a three-dimensional pore system allowing the formation of submicrometre- to micrometre-…
with a three-dimensional pore system allowing the formation of submicrometre- to micrometre-…
Pore size analysis of MCM-41 type adsorbents by means of nitrogen and argon adsorption
Methods of nonlocal density functional theory (NLDFT), proposed recently for predictions of
adsorption equilibrium and calculations of pore size distributions in micro- and mesoporous …
adsorption equilibrium and calculations of pore size distributions in micro- and mesoporous …