Catalytic Pyrolysis of Low Rank Canadian Boundary Dam Coal over ZSM‐5 and LTL Zeolites

Abstract

The catalytic pyrolysis of low‐rank coal (boundary dam lignite coal) for production of valuable chemical compounds, such as aromatics, over zeolites has been investigated with promising results. In this study, primarily zeolites ZSM‐5 (zeolite socony mobil‐5) and LTL (Linde type L) were successfully synthesized by a direct hydrothermal method without using any templates, known as structure directing agents (SDAs). Various analysis methods were employed to characterize the parent and modified zeolites before catalyzing the pyrolysis of coal. The H‐form of zeolite LTL showed the best performance for phenol, methane, and hydrogen formations in slow pyrolysis of coal at a temperature range of 400–600 °C and heating rate of 5° C/min. The effect of zeolite LTL potassium content on changing the coal decomposition path is suggested to enhance the production of these compounds along with cracking activity of the acid sites of the zeolites.

Molecular Simulation of the Catalytic Cracking of Hexadecane on ZSM-5 Catalysts Based on Reactive Force Field (ReaxFF)

“…Inagaki et al improved the catalytic performance of ZSM-5 zeolite through bead-milling, subsequent recrystallization, and acid treatment without diminution of their acidity. Additionally, ZSM-5 zeolite displayed good catalytic ability on coal cracking, , fast pyrolysis of bio-oil, , and even biomass. − …”

“…Inagaki et al 22 improved the catalytic performance of ZSM-5 zeolite through bead-milling, subsequent recrystallization, and acid treatment without diminution of their acidity. Additionally, ZSM-5 zeolite displayed good catalytic ability on coal cracking, 23,24 fast pyrolysis of bio-oil, 25,26 and even biomass. 27−30 As shown in the above-mentioned examples, the experimental approach proved to be a more straightforward way to investigate catalytic cracking reactions in many aspects.…”

How do you write and present research well? 8 — Assign authorship according to intellectual involvement

“…. is gratefully acknowledged [43] The authors must mention all the granting agencies that funded or partially funded research and salaries. Types of funding include money to conduct research, salaries, scholarships, and in-kind materials.…”

How do you write and present research well? Answers to the 20 questions

“…[25] We advocate that words and text be concise (limit redundancy) and precise (rather than vague), that verbs be active (not passive) and vigorous (avoid delexical verbs and verb mutilation). Metadiscourse often adds unnecessary words like hedges, boosts, and signposts: [11] feeble verb, verb mutilation estimate were applied to analyze [12] [13] feeble verb characterize enable the characterization feeble verb, verb mutilation characterize experienced fragmentation feeble verb, verb mutilation fragment give good agreement [14] delexical, verb mutilation agree have an effect delexical, verb mutilation affect make an assessment delexical, verb mutilation assess observations have been made [15] verb mutilation, passive observe obtain a clear understanding delexical, verb mutilation, redundant understand accumulation of ions does not occur [16] verb mutilation, feeble verb ions do not accumulate perform an operation delexical, verb mutilation operate provide an explanation delexical, verb mutilation explain predictions show close agreement [17] feeble verb, verb mutilation, vague agree take into consideration delexical, verb mutilation consider by trying to minimize [18] hedging minimizing used for comparing feeble verb compare 5. 'Revise Sentences over 30 Words Long' [26] Identify metadiscourse in the following paragraph:…”