Pore analyses of highly porous diatomite and clay based materials for fluidized bed reactors

Effect of grain size and microporosity on the in vivo behaviour of β-tricalcium phosphate scaffolds

“…Three samples from each group were dried overnight at 130 °C in order to drive off any adsorbed water from the sample. Multi-cycle porosimetry was performed to determine the neck size connected to the ink-bottle pores (pores that are connected to the outer part of the scaffold only through narrow pores) (Van Garderen et al, 2012).…”

“…3), Hg porosimetry attributes a size, which corresponds to the diameter of the smallest interconnection leading to this macropore. The pore is then referred to be an inkbottle pore (Van Garderen et al, 2012). To determine the ink-bottle porosity, multicycle Hg intrusion was used.…”

Surface silylation of mesoporous/macroporous diatomite (diatomaceous earth) and its function in Cu(II) adsorption: The effects of heating pretreatment

“…Diatomite also has many unique physical and chemical characteristics [3][4][5][6], such as highly developed mesoporosity and/or macroporosity, strong acid resistance, high mechanical strength and low thermal conductivity, enabling their wide uses in a variety of applications for high-performance technologies (e.g., microelectronics, chemo-and bio-sensors, and transducers) or as fillers, filters or supports, catalysts, adsorbents, and mild abrasives [4,7,8]. In particular, diatomite has been predominantly used as a filtration medium (e.g., filter aid) [9] for purifying various beverages and for gasification applications in fluidized bed reactors [4]. A key reason for the use of diatomite as a filtration medium is that the bimodal mesoporosity/macroporosity of diatom frustules is usually desirable for filtration because mesopores enhance the specific surface area, while macropores increase the efficiency of the mass-transport and diffusion processes.…”

“…Another reason is that the diatom frustules are rigid and naturally separated. Depending on the diatom species, the dimensions of frustules range from <1 to >100 lm (usually more than 10 lm) [4]. Therefore, the voids between the frustules are capacious and strong enough to maintain a high filtering velocity and to avoid the blocking of the filtering cake [1,8,9].…”

Alumina Coating To Realize Desired Pore Characteristics Of Sintered Diatomite Membrane

“…Porous ceramic membranes derived from low-cost natural materials such as diatomite have recently become the focus of great interest as researchers seek to exploit their cost effectiveness [1,2]. Previously, we reported on various approaches for fabricating a sintered diatomite membrane, which allowed for control over membrane characteristics [3][4][5][6][7] such as the largest pore size.…”