Size control and optimisation of intercalated layered double hydroxides

New Alternative to Produce Colored Polymer Nanocomposites: Organophilic Ni/Al and Co/Al Layered Double Hydroxide as Fillers into Low-Density Polyethylene

“…The second mass loss up to 500 °C (mass losses of 27.1, 27.2, 27.9 and 36.4% for NiU, NiUC, CoU and HCoC, respectively), is attributed to the loss of the interlayer CO 3 2-and Cl -ions and dehydroxylation of the LDH structure. 35 The last mass loss up to 900 °C, is attributed to the removal of the remaining carbonaceous material and formation of metal oxides (mass losses of 32.5, 34.1, 38.6 and 37.8% for NiU, NiUC, CoU and HCoC, respectively). [36][37][38][39][40] NiU is more stable than the other two compounds, presenting two DTG peaks at 308 and 383 °C while the peaks were observed at 291, 381 and 721 °C for NiUC, 230, 330 and 678 °C for CoU and at 242 °C for CoUC.…”

In Situ and Simultaneous Synthesis of a Novel Graphene-Based Catalyst for Deep Hydrodesulfurization of Naphtha

“…On the other hand, widening of the isotherm was due to the pore size distribution attributed to some extent to the method of synthesis. This hysteresis type was associated to aggregates of platy particles or adsorbents containing slit-shaped pores confirming the In Situ and Simultaneous Synthesis of a Novel Graphene-Based Catalyst for Deep… layered structure of sample [38]. In conjunction with these, Table 2 listed the specific surface areas, pore volume and metal loadings of the synthesized as well as; the industrial samples understudied in this work.…”

“…The thermal conductivity of the gas mixture increases because the thermal conductivity of CO is greater than that of argon. This leads to a negative peak in the TPR or TPD spectrum [38][39][40][41][42][43][44].…”

“…Thus the positive peak is attributed to hydrogen consumption of the oxygen functional groups. The Negative peak was attributed to carbonaceous support [38][39][40][41][42][43][44] and discuss later. Figure 7a from which five positive and one negative hydrogen consumption peaks are observed for the prepared catalyst.…”

Characteristics and mechanisms of sorption of organic contaminants onto sodium dodecyl sulfate modified Ca-Al layered double hydroxides

“…However, hydrophilic hydroxyl groups on the LDH surface reduce the sorption performance for hydrophobic non-ionic organic contaminants [8,9]. To enhance the sorption of non-ionic organic contaminants, anionic surfactants such as the anions of dodecyl sulfate (DS -) and dodecylbenzenesulfonic acid (DBS -) have been inserted into Mg-Al/Li-Al/Zn-Al LDHs [10][11][12][13][14][15][16][17][18]. Anionic surfactant intercalated LDHs can be prepared by the ion exchange method, using LDH-Cl or LDH-NO 3 as the precursors.…”