a	scale parameter of Weibull equation
aRP	constant of Redlich-Peterson isotherm (dm3β/mgβ)
ARE	average relative error (%)
b	shape parameter of Weibull equation
bT	Temkin constant related to the adsorption heat (J g/mol mg)
BET	Brunauer-Emmett-Teller isotherm
BJH	Barrett-Joyner-Halenda isotherm
β	exponential constant of Redlich-Peterson isotherm
C 0	initial adsorbate concentration (mg/dm3)
Ce	equilibrium adsorbate concentration (mg/dm3)
Cs	solubility (mg/dm3)
DSC	differential scanning calorimetry
Eads	efficiency of adsorption (%)
EDA	adsorption energy calculated from Dubinin-Astakhov model (J/mol)
EDR	adsorption energy calculated from Dubinin-Radushkevich model (J/mol)
F	fraction of drug release
Fcalc.	fraction of drug release (calculated)
Fexp.	fraction of drug release (experimental data)
KDA	constant of Dubinin-Astakhov isotherm related to the adsorption energy (molnDA/JnDA)
KDR	constant of Dubinin-Radushkevich isotherm related to the adsorption energy (mol2/J2)
KF	Freundlich constant (mg1-1/ndm3/n/g)
KJ	Jovanovich constant (dm3/mg)
KL	Langmuir constant (dm3/mg)
KRP	constant of Redlich-Peterson isotherm (dm3/g)
KT	Temkin binding constant (dm3/mg)
m	mass of adsorbent (g)
MTGR	molar weight of ticagrelor molecule (g/mol)
MPTMS	(3-mercaptopropyl)trimethoxysilane
nTGR	number of ticagrelor molecules (mol)
nDA	heterogeneity factor of Dubinin-Astakhov isotherm
nF	exponential constant of Freundlich equation
n-(CH2)3-SO3H	number of propyl-sulfonic acid groups (mol)
p/p0	relative pressure
Q ads(max)	maximum adsorption capacity calculated from given isotherm model (mg/g)
Q DA(max)	maximum adsorption capacity calculated from Dubinin-Astakhov isotherm (mg/g)
Q DR(max)	maximum adsorption capacity calculated from Dubinin-Radushkevich equation (mg/g)
Qe	amount of adsorbate in equilibrium solid state (mg/g)
Qe,calc.	amount of adsorbate in equilibrium solid state (calculated) (mg/g)
Qe,exp.	amount of adsorbate in equilibrium solid state (experimental data) (mg/g)
Q J(max)	maximum adsorption capacity calculated from Jovanovich equation (mg/g)
Q L(max)	maximum adsorption capacity calculated from Langmuir equation (mg/g)
Q s(max)	surface area-normalized adsorption capacity (mg/m2)
Q -(CH2)3-SO3H	content of propyl-sulfonic acid groups (mol/g)
R	gas constant (8.314 J/mol K)
SBET	specific surface area calculated from BET model (m2/g)
STP	standard temperature and pressure
T	absolute temperature (Kelvin)
t	time (h)
TEM	transmission electron microscopy
TEOS	tetraethyl orthosilicate
TGR	ticagrelor