Competitive adsorption desulfurization performance over K – Doped NiY zeolite

Ultra-deep adsorptive removal of thiophenic sulfur compounds from FCC gasoline over the specific active sites of CeHY zeolite

“…As reported in the literatures, the catalytic reactions can occur once thiophene molecules are adsorbed on the protonic or metal cations modified zeolite adsorbents at ambient temperature [34][35][36][37][38][39][40][41] . Guisnet et al have found thiophene dimers and trimers as the main products on HFAU zeolites with different molar ratios of Si and Al by employing GC-MS detected method [34] .…”

Adsorptive Desulfurization of Model Gasoline by Using Different Zn Sources Exchanged NaY Zeolites

“…Industrially, the HDS process involves catalytic treatment with H 2 to convert the various sulfur compounds to hydrogen sulfide and requires severe operating conditions [ 1 ]. The olefins in feedstock will react with H 2 to form alkanes under such conditions, resulting in significant loss of the octane number [ 20 ]. Moreover, some sulfides, especially aromatic thiophenes and TP derivatives, are hard to remove by HDS [ 12 ].…”

Adsorption desulfurization and weak competitive behavior from 1-hexene over cesium-exchanged Y zeolites (CsY)

“…Other bands (not shown for brevity) observed in the range of 30 0 0-270 0 cm −1 and below 1500 cm −1 are attributed to CH 2 stretching and bending vibration modes, respectively [25][26][27] . The stretching vibration of C = C in the 1-hexene was 5 cm −1 lower than IR spectra of the gas 1-hexene [28] , which was caused by a decrease in the electron density of C = C of the 1-hexene when the C = C interacted with CsY adsorbents by π -complexation [17] .…”

“…Li et al . [17] utilized K cation to decrease the amount of Brönsted acid sites of NiY adsorbent. The results showed that protonation reactions were weakened and the negative effects of Brönsted acid sites were reduced.…”