Improving low-temperature CS2 conversion for the Claus process by using La(III)-doped nanofibrous TiO2 xerogel

Performance of gamma-Al2O3decorated with potassium salts in the removal of CS2from C5cracked distillate

“…The OH À on the support is mainly derived from K 2 CO 3 which is essential for the CS 2 conversion. 35,36 During the hydrolysis process, trace water in the C 5 distillate oil and a large number of OH À on the adsorbent can hydrolyze CS 2 to H 2 S. The C 5 contains approximately 50-70 mg mL À1 of dissolved O 2 ; the O 2 then oxidizes H 2 S to elemental S or SO 4 2À , covering the active site of the adsorbent, resulting in a decrease in adsorption capacity. 37 During this period, OH À , -COO and C]O act to promote oxidation.…”

Metal Oxide-Related Dendritic Structures: Self-Assembly and Applications for Sensor, Catalysis, Energy Conversion and Beyond

“…When isopropanol is used, interestingly, dendritic TiO 2 can be prepared which is composed of 2D structures ( Figure 2 c,d) [ 47 ]. Due to a high surface area and large pore size, this type of material shows advantages over traditional catalysts for industrial applications [ 48 , 49 , 50 ]. The sol‒gel self-assembly will be discussed further in the following section.…”

Exergy study of amine regeneration unit using diethanolamine in a refinery plant: A real start-up plant

“…It causes severe damage to equipment as a result of its corrosiveness and may cause human death [1,2]. Sulfur recovery unit (SRU) plants recover elemental sulfur from harmful H 2 S [3,4] to prevent any acidic gas emissions from violating environmental regulations [5,6,7]. Recently, most plants have used the modified Claus process for sulfur recovery [8].…”

“…Recently, most plants have used the modified Claus process for sulfur recovery [ 8 ]. H 2 S is usually removed by an amine scrubber unit that follows the modified Claus process [ 6 ]. The CO 2 /H 2 S removal amine unit normally consists of equipment such as exchangers, coolers, a lean amine (LA)/rich amine (RA) heat exchanger, an absorber, a stripper, and pumps.…”

“…The selection of an extremely effective chemical solvent that can meet beneficial requirements such as a high absorption capacity, high chemical and thermal stability, rapid reaction kinetics, and large regeneration energy savings is one of the most pivotal factors in chemical absorption [ 6 ]. Aqueous solvents of alkanolamine such as diethanolamine (DEA) and methyl DEA (MDEA) have been used as industrial chemical absorbents in scrubber units [ 10 ], but these amine solvents require large amounts of energy for their regeneration [ 11 ].…”