Hydrotreating of Waste Tire Pyrolysis Oil over Highly Dispersed Ni2P Catalyst Supported on SBA-15

Abstract

A highly dispersed nickel phosphide catalyst supported on SBA-15 was prepared and tested for the hydrotreating of tire pyrolysis oil (TPO). Physicochemical properties of the prepared catalyst were analyzed by CO uptake chemisorption, BET, TEM, and X-ray diffraction (XRD). An advanced technique with gas chromatography equipped with mass spectrometry and atomic emission detector was applied to investigate carbon-, sulfur-, and nitrogen-containing compounds in TPO. Hydrotreating tests were carried out in a fixed-bed continuous flow reactor at 350 °C, 3.0 MPa, and LHSV of 0.5 h−1. The Ni2P/SBA-15 exhibited an HDS conversion of 89.3% and an HDN conversion of 60.7%, which was comparable to the performance of a commercial NiMoS catalyst under the same conditions.

Production of cleaner waste tire pyrolysis oil by removal of polycyclic aromatic hydrocarbons via hydrogenation over Ni‐based catalysts

“…From the previous literature, NiMoS and NiW/HY catalysts in the sulfided form had a high ability to remove sulfur in WTPO and WTPO/LCO mixture, respectively at ca. 94‐98% and NiW/HY catalyst could promote the PAHs removal at 62.1% 7,61 . However, the sulfidation for catalyst activation is generally performed at high temperatures under the environment of sulfiding agents such as H 2 S or CS 2 , which are poisonous and possibly contaminated the resulted product 66,67 .…”

“…94-98% and NiW/HY catalyst could promote the PAHs removal at 62.1%. 7,61 However, the sulfidation for catalyst activation is generally performed at high temperatures under the environment of sulfiding agents such as H 2 S or CS 2 , which are poisonous and possibly contaminated the resulted product. 66,67 To overcome these problems, the present work using the NiMo/γ-Al 2 O 3 and NiW/γ-Al 2 O 3 catalysts reduced under hydrogen atmosphere without the addition of a hydrogen donor agent was safer process, which consequently decreased the environmental impact.…”

“…[3][4][5] Since the direct burning of WT generates the toxic gases to be harmful for human or animal health and environment, 6 the transformation of WT via pyrolysis is a more environmental friendly process to produce high yield of alternative liquid fuels up to 38%. 7 However, the increasingly stringent environmental policies to control the amounts of aromatics and sulfur or nitrogen species presented in the fuels limit the utilization of untreated WTPO. It has been reported that WTPO had high contents of organosulfurous compounds (1.15 wt%) and polycyclic aromatic hydrocarbons (PAHs, ca.…”

Pursuing the End-of-Life Tire Circularity: An Outlook toward the Production of Secondary Raw Materials from Tire Pyrolysis Oil

“…In view of this potential, the hydroprocessing of TPO has been studied by several researchers by feeding it either pure − or mixed with other streams. ,, Table summarizes some of the works conducted in the field. Herein, it is important to highlight the important contributions of Hita et al , and Palos et al, also from the University of the Basque Country.…”

Development and Application of a Novel Multiloop Splitter-Based Non-cryogenic Artificial Trapping Modulation System in Comprehensive Two-Dimensional Gas Chromatography

“…26 −28 According to toxic gases released during direct burning of WT, which are harmful to humans, animal health, and environment, 29 pyrolysis is one of the environmentally friendly processes to transform WT as alternative liquid fuels with a high yield up to 38%. 30 However, the utilization of WTPO is limited due to the increasing stringent environmental policies to control the amounts of aromatics and sulfur or nitrogen species presented in the untreated one. It has been reported that WTPO contained ca.…”