Potentialization of bentonite properties as support in acid catalysts
Source abstract
Abstract
Enhancement of the main physicochemical properties of a natural bentonite was carried out by means of modifications using surfactant, reflux, microwave treatment and, subsequently, the incorporation of AlZr and AlCe species. The evolution of the main changes in each modification stage was evaluated by means of X-ray diffraction, N sortometry, scanning microscopy (SEM), NH-TPD, NH-DRIFTS and CO adsorption at low temperature. For the evaluation of the catalytic behavior, the dehydration-dehydrogenation reactions of 2-propanol and hydro-conversion of decane were used; both of which generate, in addition, information regarding the acidic properties of the materials. The correlation of the number, type and acid strength with the catalytic behavior, allowed establishing the effect produced by both the delamination method and the nature of the incorporated cation. This generated tools that allow controlling the physicochemical properties, and more specifically, the enhancement of the acidity of new supports based on this type of natural clay mineral.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Minerals Flotation and Separation Techniques · Clay minerals and soil interactions · Adsorption, diffusion, and thermodynamic properties of materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (72)
Show source-provided references
1. Desafios da acidez na catálise em estado sólido10.1590/S0100-40422009000200044 ↗
2. Challenges and technological opportunities for the oil refining industry: A Brazilian refinery case10.1016/j.enpol.2010.01.050 ↗
3. A review of recent advances in catalytic hydrocracking of heavy residues10.1016/j.jiec.2015.01.011 ↗
4. Investigation of the initial stages of the montmorillonite acid-activation process using DFT calculations10.1016/j.clay.2018.08.012 ↗
5. Synergism of clay and heteropoly acids as nano-catalysts for the development of green processes with potential industrial applications10.1007/s10563-005-5997-x ↗
6. Cracking of heavy vacuum gas oils over (HCeY) zeolite-containing, aluminum-pillared montmorillonite and activated kaolinite clays10.1134/S0965544114010113 ↗
7. Catalytic cracking properties of Al-Zr-B composite pillared clays10.1016/S0166-9834(00)83120-6 ↗
8. The nature of strong Brønsted acidity of Ni-SMM clay10.1016/j.apcatb.2016.03.006 ↗
9. Decane hydroconversion with Al–Zr, Al–Hf, Al–Ce-pillared vermiculites10.1016/j.apcata.2008.04.031 ↗
10. A review of the different techniques for solid surface acid–base characterization10.1016/S0001-8686(03)00066-6 ↗
11. Incorporation of Ni and Mo on delaminated clay by auto-combustion and impregnation for obtaining decane hydroconversion catalysts10.1016/j.cattod.2017.08.028 ↗
12. Catalytic oxidation of aromatic VOCs with Cr or Pd-impregnated Al-pillared bentonite: Byproduct formation and deactivation studies10.1016/j.clay.2007.06.003 ↗
13. Microwave synthesis of delaminated acid saponites using quaternary ammonium salt or polymer as template10.1016/j.clay.2015.05.004 ↗
14. Delaminated Fe2O3-Pillared Clay: Its Preparation, Characterization, and Activities for Selective Catalytic Reduction of No by NH310.1006/jcat.1995.1016 ↗
15. Synthesis and characterization of delaminated iron-pillared clay with meso–microporous structure10.1016/j.micromeso.2005.08.022 ↗
16. Catalytic performance of Ni–Pr supported on delaminated clay in the dry reforming of methane10.1016/j.ijhydene.2010.10.096 ↗
17. Al-, Al,Zr-, and Zr-Pillared Montmorillonites and Saponites: Preparation, Characterization, and Catalytic Activity in Heptane Hydroconversion10.1006/jcat.1998.2349 ↗
18. General aspects of zeolite acidity characterization10.1016/j.micromeso.2015.04.038 ↗
19. Molecular dimensions for adsorptives10.1021/ja973906m ↗
20. Bronsted acidity of extraframework debris in steamed Y zeolites from the FTIR study of CO adsorption
21. Use of new tin orthophosphates as catalysts for the gas-phase dehydrogenation-dehydration of alcohols
22. Molecular shape-selectivity of MFI zeolite nanosheets in n-decane isomerization and hydrocracking10.1016/j.jcat.2012.12.017 ↗
23. Hydroisomerization and hydrocracking activity enhancement of a hierarchical ZSM-5 zeolite catalyst via atomic layer deposition of aluminium10.1039/C6CY00780E ↗
24. IZM-2: A promising new zeolite for the selective hydroisomerization of long-chain n-alkanes10.1016/j.jcat.2013.01.017 ↗
25. The effect of ultrasound in the synthesis of clays used as catalysts in oxidation reactions10.1016/j.cattod.2007.12.129 ↗
26. Effect of Fe and Ce on Al-pillared bentonite and their performance in catalytic oxidation reactions10.1016/j.apcata.2006.10.009 ↗
27. Hydroconversion of heptane over a Colombian montmorillonite modified with mixed pillars of Al–Zr and Al–Si10.1016/j.cattod.2005.07.054 ↗
28. Hydroconversion of n-heptane: a comparative study of catalytic properties of Pd/Sulfated Zr-pillared montmorillonite, Pd/Sulfated zirconia and Pd/γ-alumina10.1016/j.apcata.2003.09.021 ↗
29. XRD and ATR/FTIR investigations of various montmorillonite clays modified by monocationic and dicationic imidazolium ionic liquids, J. Mol
30. Determination of micropore volume and external surface of zeolites10.1016/j.micromeso.2016.08.018 ↗
31. Extension of Harkins-Jura adsorption isotherm to solute adsorption10.1016/0166-6622(92)80244-V ↗
32. Hydroconversion of n -Decane over Ni–Mo supported on modified halloysite catalysts10.1021/acs.energyfuels.8b02169 ↗
33. Influence of gold particle size in Au/C catalysts for base-free oxidation of glucose10.1016/j.cattod.2017.01.007 ↗
34. Quantitative characterization of the solid acidity of montmorillonite using combined FTIR and TPD based on the NH3 adsorption system10.1016/j.clay.2013.07.006 ↗
35. Infrared studies of the surface acidity of oxides and zeolites using adsorbed probe molecules10.1016/0920-5861(95)00248-0 ↗
36. Glycerol steam reforming on bimetallic NiSn/CeO2–MgO–Al2O3 catalysts: influence of the support, reaction parameters and deactivation/regeneration processes10.1016/j.apcata.2014.12.029 ↗
37. Does shaping catalysts modify active phase sites? A comprehensive in situ FTIR spectroscopic study on the performance of a model Ru/Al2O3 catalyst for the CO methanation10.1016/j.cej.2018.09.166 ↗
38. 2-Propanol oxidation over gold supported catalysts coated ceramic foams prepared from stainless steel wastes10.1016/j.molcata.2007.07.038 ↗
39. Green fabrication of bentonite/chitosan@cobalt oxide composite (BE/CH@Co) of enhanced adsorption and advanced oxidation removal of Congo red dye and Cr (VI) from water10.1016/j.ijbiomac.2018.12.225 ↗
40. Thiabendazole/bentonites hybrids as controlled release systems10.1016/j.colsurfb.2018.12.030 ↗
41. The influence of acid modification on the structure of montmorillonites and surface properties of bentonites10.1016/j.clay.2019.02.001 ↗
42. Delaminated montmorillonite with iron(III)-TiO2 species as a photocatalyst for removal of a textile azo-dye from aqueous solution
43. Relationship between hydrothermal treatment parameters as a strategy to reduce layer charge in vermiculite, and its catalytic behavior10.1016/j.cattod.2007.12.110 ↗
44. Synthetic organo- and polymer – clays : preparation, characterization, and materials applications10.1016/S0169-1317(00)00005-3 ↗
45. Hydrolysis of cellulose with one-pot synthesized sulfonated carbonaceous solid acid, Fuel process
46. Production of middle distillate through hydrocracking of paraffin wax over Pd/SiO2–Al2O3 catalysts10.1016/j.jiec.2010.05.011 ↗
47. Montmorillonite based porous clay heterostructures: influence of Zr in the structure and acidic properties10.1016/j.micromeso.2013.03.037 ↗
48. Adsorption of low-concentration arsenic from water by co-modified bentonite with manganese oxides and poly(dimethyldiallylammonium chloride)10.1016/j.jece.2017.11.062 ↗
49. Incorporation of titanium and titanium–iron species inside a smectite-type mineral for photocatalysis10.1016/j.clay.2010.09.007 ↗
50. Acidity characterization of pillared clays through microcalorimetric measurements and catalytic ethylbenzene test reaction10.1016/j.apcata.2007.07.013 ↗
51. Surface properties and cracking activity of delaminated clay catalysts10.1016/0920-5861(88)85014-4 ↗
52. Surface and catalytic properties of Ce-, Zr-, Au-, Cu-modified SBA-1510.1016/j.jcat.2014.02.005 ↗
53. Gold supported on Fe, Ce, and Al pillared bentonites for CO oxidation reaction10.1016/j.apcatb.2006.10.018 ↗
54. Immobilized laccase on bentonite-derived mesoporous materials for removal of tetracycline10.1016/j.chemosphere.2019.02.020 ↗
55. Highly efficient conversion of glucose into methyl levulinate catalyzed by tin-exchanged montmorillonite10.1016/j.renene.2017.12.104 ↗
56. Montmorillonite-based porous clay heterostructures (PCHs) intercalated with silica–titania pillars—synthesis and characterization10.1016/j.jssc.2009.02.017 ↗
57. Pillared clays as catalysts10.1080/01614948808080811 ↗
58. Characterization of the acidity of Al- and Zr-pillared clays10.1346/CCMN.2003.0510311 ↗
59. Ce-Al-pillared clays: synthesis, characterization, and catalytic performance10.1021/ie990415x ↗
60. Acidic and hydrocarbon catalytic properties of pillared clay10.1016/0920-5861(88)85013-2 ↗
61. Pillaring of high charge density synthetic micas (Na-4-mica and Na-3-mica) by intercalation of oxides nanoparticles10.1016/j.micromeso.2006.05.015 ↗
62. Unique Lewis and Bronsted acidic sites texture in the selective production of tetrahydropyran and oxepanefrom1,5-pentanediol and 1,6-hexanediol over sustainable red brick clay catalyst10.1016/j.heliyon.2019.e01212 ↗
63. An infrared reflectance study of Si-O vibrations in thermally treated alkalisaturated montmorillonites10.1180/000985599546334 ↗
64. Discrepancy between TPD- and FTIR-based measurements of Brønsted and Lewis acidity for sulfated zirconia10.1016/j.apcatb.2008.05.025 ↗
65. A simple, inexpensive, and reliable method for measuring Brønsted-acid site densities in solid acids10.1023/A:1020514911456 ↗
66. Investigation on n -Alkane hydroisomerization, a comparison of IM-5 to ZSM-5 zeolites10.1021/acs.iecr.8b03918 ↗
67. Characterization of oxide surfaces and zeolites by carbon monoxide as an IR probe molecule10.1016/S0360-0564(02)47008-3 ↗
68. Acidic and basic properties of zirconia-alumina and zirconia-titania mixed oxides10.1016/0304-5102(93)85061-W ↗
69. Microcalorimetric and catalytic studies of the acidic character of modified metal oxide surfaces. 1. Doping ions on alumina, magnesia, and silica10.1021/j100014a036 ↗
70. Polyfunctional heterogeneous catalysis10.1016/S0360-0564(08)60287-4 ↗
71. Mechanisms of heptane isomerization on bifunctional Pd/H-beta zeolites10.1006/jcat.1996.0094 ↗
72. Pillarization in concentrated media with solid Al and Al-Zr polymers to obtain acid catalysts10.1016/j.cattod.2019.04.006 ↗