This work pioneers the thermocatalytic conversion of tagua seeds (or ivory nut) from palm Phytelephas aequatorialis into key chemical building blocks, being levoglucosenone, furfural and levomannosan. Annually, ca. 100,000 metric ton those are produced in Ecuador. Mannan (a mannose-polymer similar to cellulose) is main constituent tagua. Thermocatalytic conversions were first explored on analyt...

Chemical glass frosting processes are widely used to create visual attractive surfaces. A commonly bath mainly contains ammonium bifluoride (NH4HF2) mixed with hydrochloric acid (HCl). The process consists of several baths. Firstly, the preliminary clean object. Secondly, which etches rough light scattering structure into surface. Finally, washing baths frosted This is where constituents preced...

The fossil properties can be increased via enrichment process. It is the process that removes sulfur and mineral matter without changing the organic structure. In this study, Çan lignite was demineralized with some mineral free acid of 5% such as HCOOH and some mineral acids of 5% such as HNO3, H2SO4, HCl, H3PO4 and HF after 5% NaOH washing. The best sulfur and mineral matter performed were obt...

A gas permeable CHA-type aluminophosphate molecular sieve membrane was ionothermally synthesized on a porous d-alumina substrate through the so-called “substrate surface conversion” method. The synthetic conditions for this specific membrane were optimized. The temperature, time and the amounts of H3PO4 and HF in the initial synthesis solution were investigated. X-ray diffraction (XRD), scannin...

Pine needle-like Pd micro/nano-leaves have been synthesized by a facile, template-free electrochemical method. As-synthesized Pd micro/nano-leaves were directly electrodeposited on an indium tin oxide substrate in the presence of 1.0 mM H2PdCl4 + 0.33 M H3PO4. The formation processes of Pd micro/nano-leaves were revealed by scanning electron microscope, and further characterized by X-ray diffra...

Experimental data were collected on the solubility equilibrium of the mineral of bone, tooth enamel and calcium phosphate renal stones. Evaluation in the form of potential diagrams of Ca(OH)2 versus H3PO4 shows that Ca/P ratios of 1, 4/3, 10/7, 3/2 and 5/3, related to phases like brushite, octocalcium phosphate, whitlockite, defective apatite and hydroxyapatite respectively can be important. Th...

Water hyacinth biomass was used for the synthesis of activated carbons in process chemical activation with H3PO4, followed by controlled carbonization. The study investigates effect various impregnation weight ratios H3PO4 and dry (0.5–3.0), as well different carbonization temperatures (T = 400–800 °C), on surface characteristics produced (AC). carbon obtained an ratio 1.5 a temperature 600 °C ...

Abstract The continuous generation of waste resulting from the industrial activities humans has significantly been on rise, especially liquid wastes emanating cassava processing mills, which is a major cause for concern in developing countries. This study focused preparation H 3 PO 4 activated periwinkle carbon (APSC) and use removal cyanide wastewater. influence variables such as pH, adsorbent...