- Surface Area & Gas Adsorption
- Pore Size
- Representative Sampling
- Particle Size
- Particle Shape
- Dynamic Vapor Sorption (DVS)
- Zeta Potential
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Consistent and reliable surface area results depend upon proper sample preparation procedures. In terms of B.E.T. analysis, the limiting step in rate of throughput is often sample preparation. The complete degassing of samples can often require several hours, while surface area measurements may require as little as 15 minutes.
Quantachrome manufactures several models of degassers to fulfill your sample preparation needs.
The gold-standard in vacuum sample preparation for physisorption analyzers; individual temperature control and ramp rates for all six stations, plus optional use of a timer. Built-in cold trap for efficient removal of condensibles at low degassing temperatures and clean vacuum. Turbopump version available for rapid, high-vacuum degassing. Comes complete with heating mantles and vacuum pump. Sample cells not included.
Vacuum/Flow preparation unit for Quadrasorb-SI and Autosorb-6B. Individually heated stations with programmable temperature ramp. Individual cooling stations. Connects to PC for easy setup and data logging. Vacuum pump and sample cells not included
Recommended for all surface area analyzers. Six sample ports, single temperature zone: ideal for quality control and fixed protocol applications. Choose from flow/vacuum or flow-only models. Vacuum pump and sample cells not included.
Flow-through preparation unit for Monosorb surface area analyzer. Each of three stations has independent temperature controls. Comes complete with heating mantles and sample cell assemblies.
For more information contact us.
Degasser Research Papers
Review recent papers citing use of Quantachrome degassers:
TITLE: Fast detection of triacetone triperoxide (TATP) from headspace using planar solid-phase microextraction (PSPME) coupled to an IMS detector
AUTHORS: Fan, Young, Canino, Smith, Oxley and Almirall - Florida International University, USA
USAGE: After degassing, nitrogen BET was performed on the samples
TITLE: Formulation and delivery of improved amorphous fenofibrate solid dispersions prepared by thin film freezing
AUTHORS: Meimei Zhang, Houli Li, Bo Lang et al - Sun Yat-sen University, China
USAGE: Powder samples were placed into the sample bulb, degassed for a minimum of 24 hours at 30˚С prior to analysis
TITLE: Measuring surface area of airborne titanium dioxide powder agglomerates: relationships between gas adsorption, diffusion and mobility-based methods
AUTHORS: LeBouf, Ki Ku, Chen, Frazer, Cumpston, Stefaniak - National Institute for Occupational Safety and Health, USA
USAGE: Blank and particle-laden filter samples were degassed under light vacuum (1.9 Pa) at 120 °C for 24 h prior to analysis.
TITLE: Influence of the alkoxide group, solvent, catalyst, and concentration on the gelation and porosity of hexylene-bridged polysilsesquioxanes
AUTHORS: Loy, Obrey-DeFriend, Wilson Jr et al - University of Arizona, USA
INSTRUMENT: Quantachrome Degasser
USAGE: Prior to surface area analysis, samples were outgassed on a Quantachrome six port degasser for 18 h at 100 °C
TITLE: Kinetics study and crystallization process design for scale‐up of UiO‐66‐NH2 synthesis
AUTHORS: Schoenecker, Belancik, Grabicka, Walton - Georgia Institute of Technology, USA
USAGE: Prior to each adsorption measurement, the sample was outgassed for approximately 16 h at 473 K
TITLE: Is their potential for post-synthetic brominating reactions on benzene bridged PMOs?
AUTHORS: Smeulders, Meynen,Houthoofd, Mullens, Martens, Maes, Cool - University of Antwerpen, Belgium
INSTRUMENT: Autosorb Degasser
USAGE: Prior to N2-sorption, all samples were outgassed at 363 K for 16 h.
TITLE: Rates of Exchange of Cs+ and Sr2+ for Poorly Crystalline Sodium Titanium Silicate (CST) in Nuclear Waste Systems
AUTHORS: Clearfield, Medvedeva, Kerlegona, Bossera, Burnsa & Jackson - Texas A&M University, USA
INSTRUMENT: Quantachrome degasser
USAGE: The samples (0.2-0.6 g) were preheated at temperatures of 225–300°C for 12 h … at the pressure of 2 × 10−3 Torr.
TITLE: Mesoporous titania photocatalyst: effect of relative humidity and aging on the preparation of mesoporous titania and on its photocatalytic activity performance
AUTHORS: Ibrahim, Masrom, Mazinani, Radiman, Jamil, Beitollahi, Negishi and Yahya - Advanced Material Research Centre (AMREC), Malaysia
USAGE: After degassing of the sample at 150 °C for 6 h, the surface area was measured by use of nitrogen absorption–desorption (BET)
TITLE: Testing of Brushite (CaHPO4·2H2O) in Synthetic Biomineralization Solutions and In Situ Crystallization of Brushite Micro-Granules
AUTHORS: Miller, Kendall, Jain, Larson, Madden and Tas - University of Oklahoma, USA
INSTRUMENT: Nova 2000e
USAGE: Surface areas of powder samples were determined by five-point BET analysis of the nitrogen adsorption isotherm, obtained at −196°C after degassing overnight at 30°C
TITLE: Material Characterization and Bioactivity Evaluation of Dental Porcelain modified by Bioactive Glass
AUTHORS: Manda, Goudouri, Papadopoulou, Kantiranis et al - Aristotle University of Thessaloniki, Greece
USAGE: Textural characterization was performed by Nitrogen (N2) adsorption-desorption experiments, after degassing the samples at 320 °C for 16 hours under 5 × 10 −9 torr vacuum