QC see quality control

QPQP bleaching 267–271

– brightness development as function of

Consumed OXE 271

quality control, fundamentals 1213–1218

Quality profile, dissolving pulp 1023

Quality requirements, mechanical pulp 1143

Quercetin, formation from taxifolin under acid

Sulfite conditions 426

Quercus 37

Quercus alba, inorganic composition 40

Quercus nigra, pulp yield–kappa number

Relationship in soda-AQ cook 321

Quercus robur

– average cell dimensions 52

– extractives 35

– obligate heartwood formation 57

Quercus rubra, kinetic parameters for xylan

Water prehydrolysis 333

Quinoid structures

– elimination by alkaline hydrogen peroxide

– lignin 857

– residual lignin 174

Quinone-methide

– addition of hydrogen sulfide 167

– formation 166

– LUMO-distribution 166

– reduction 170

Quinone-methide intermediate

– chlorine bleaching 747

– lignin 856

r

R-values see alkali resistances

R10 see alkali resistances

R18

– lignin content 1230

– see also alkali resistances

R2 process, chlorine dioxide generation 742

Radial concentration profile

– Kazi and Chornet diffusion model of

Impregnation 153

– numerical solution of diffusion equation

162–163

Radial diffusion coefficient

– as function of NaOH concentration 145

– Poplar 144

Radial impregnation, NaOH concentration

Profile 155

Radiation degradation, molecular weight

Reduction 1059

Radical formation 792, 829

Radical part, ozone reactions 791

Radical reactions 792

Radical-scavenging

– methanol 821

– organic solvents 822

Radical-type chain reactions 789

Radical yield 812

Radiclone AM, Noss 606

Radiscreen, Noss 603–604

Raditrim, Noss 604

Index 1337

raised roll thickness screen 91–92

Raman spectroscopy 117, 178

Raoult’s law 970

Rapid displacement heating see RDH

Rare sugar, yield as function of H-factor 438

Rattan, cell types 50

Rauma three-stage sulfite cook

– a-cellulose as function of third stage pH

And temperature 471

– pH, temperature and pressure course 471

Raw material

– mechanical pulp 1075–1078

– paper 1153–1156

– pulp production 21–63

– storage 69–71

– unsuitable 1157

Rays

– hardwoods 54

– softwoods 51

RDH 9

– cooking cycle 373

– effective alkali profile 276–277

– hydraulic cook 275

– results 275–280

– sulfide ions concentration 278

– technology and equipment 372–373

RDH pulp

– HexA content 278–279

– xylan content 255

Reaction conditions

– acid sulfite pulping process chemistry

449–464

– pulp quality 953–962

Reaction enthalpy, kraft recovery boiler 984

reaction kinetics, crystallinity 1262–1263

reaction wood 54–56

Reactive oxygen species see ROS

Reactivity

– bleaching chemicals 611

– chlorite ions 739

– lignin model compounds 635

– lignin structures 634–641

– pulp specification 1060

Дата добавления: 2015-10-21